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This is a picture of our clThis is a picture of our class.There are fifty-five students in our class.You can see twenty-eight boys and twenty-seven girls.There is an American student in our class.His name is David.His Enslish is very good.He likes drinking milk and apple juice.We like eating rice and drinking tea.We are very happy together.( )5.Where is David from?A.China.B.The USA.C.England.D.Japan.
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USA?????????
the usa???? ???? ????
????仰????
??????????
american student
American=USA?
There is an American student
the united state of America
为您推荐：
其他类似问题
选B，里面有一句说American
student就是美国来的学生
求采纳谢谢你
B答案在第二段第一行 American也是USA
选B，美国。文中写了There is American student in our class.American的意思和USA一样，都是美国。
扫描下载二维码The Influence of the RMB Entering into the SDR “Currency Basket”
| LinkedIn
SDR （Special Drawing Right），also called the” Paper Gold”, firstly published in 1970, it acts as the edger asset, can be used to repay the IMF debt, and make up for the deficit in the balance of payments between the governments of Member States. It also can be used as the international reserves, as well as the gold and the convertible currency.
On October 1, 2016, the value of SDR will be decided by the current exchange rate&of the “Currency basket ”,which includes the dollar, the euro, the RMB, the yen and the pound ,which respectively accounts for 41.73%, 30.93%, 10.92 %, 8.33% and 8.09%.
&RMB enters into the “basket" marks that China's economic development and the role of the RMB is widely accepted by the international community.So, the RMB enters into the “basket" can have a great impact on the development of Chinese mining industry.
&Firstly, the bulk of energy minerals valued by the RMB will avoid the risk of the exchange rate, lower the purchasing costs and get more “Speaking Right” of the pricing.
&Since carrying out the reform and opening up policy, China has gradually becomes the world's energy and mineral resources consumption center,in 2013, the consumption of 20 kinds of important minerals among the 35 kinds of &minerals exceeds 30% of the world total amount of minerals. The coal, iron, manganese, copper, aluminum, lead, zinc, consumption of nickel, tungsten, tin, antimony, rare earth, etc surpassed 40% of the world total amount. Which results in almost all bulk minerals rely on importing.
&With the internationalization process of the of RMB, there are more opportunities to import the inadequate energy and mineral resource in RMB, and avoid the exchange rate risk in other international currencies to get more “pricing right” and guarantee the security of energy resources of China.
&Secondly, the internationalization of RMB can promote the consumption of the energy and minerals and foster the global mining industry get out of the “low ebb”.
The internationalization of RMB and the “the Belt and Road “strategy can mutually reinforce each other. On the one hand, the the Belt and Road “strategy needs the&long-term capital services, which enlarges the development of the&RMB
on the other hand, the RMB internationalization&also offers the adequate support to the trade and the economic cooperation of the “the Belt and Road” to avoid the risk of using a third party currency.
&Thirdly, the internationalization ofRMB will promote the international cooperation in terms of mining and metallurgy and promote the adjustment of domestic mining industry structure
China has a strong advantage in terms of smelting capacity of the coal, crude steel, aluminum, lead, zinc, nickel, etc., with a clear surplus trend.
The surplus in mining and metallurgy industry increases the resource supply pressure, resulting in overwhelmed environmental and ecological burden and the imbalanced structure. The internationalization ofRMB will provide financial support for the output of the advantaged minerals.
&Looking for more of the latest headlines on LinkedIn?Many-band WebSDR in JO32KF
WebSDR on nine bands
Update July 6:
Yesterday evening we finally installed the antenna, and
the WebSDR server is now finally operational again!
In the end, we were offline for 1 year, 8 months and 5 days.
We'll still have to see how well the new antenna performs.
For now, the system has been configured for 8 bands of each 600 kHz wide.
In future, we intend to install a system with continuous coverage
like the experimental system that has been active from my (PA3FWM's)
Update May 25:
We have obtained permission to mount the antenna semi-permanently at
the place where we successfully tested it earlier (see below).
However, in the discussions with people from the university's facility
services about this, it turned out that our planned mounting point was
not yet properly grounded for lightning protection, which is needed when
we attach an antenna there. They have ordered proper lightning protection
when that's done, we can mount the antenna.
Update April 19:
New tests done, after designing and building a low-pass filter for the Mini-Whip.
The resulting waterfall displays can be seen
Clearly, the noise around 7 MHz is gone now, so thas was probably indeed
caused by overload due to FM broadcast transmitters.
The band now looks quite clean, with lots of amateur signals visible and
Unfortunately, there's a lot of QRM on 80m, of which the cause is unknown.
Next step: mounting this antenna in a (semi-)permanent way.
Update April 5:
Some more testing done, with the Mini-Whip again temporarily installed
but this time in an (almost) watertight enclosure and on a little pole.
for a picture of the waterfall
The noise level jumps back and forth between two levels, mostly
notable on 80m, 40m and 30m bands. We later found that this variation
was due to a fla
with the ground connection solidly attached, the noise is low.
There's some broadband noise covering the low end of 40m.
This may well be an intermodulation product of two nearby FM broadcast
transmitters on 93.7 and 100.7 MHz; if so, then a simple low-pass filter
at the input of the active antenna should solve this.
All across 80m the n the cause of this is as yet
The waterfall at the bottom shows a frequency range near 27 MHz;
the very strong signal here is a pager transmitter (for the university's
safety personnel) located on the same building as we are. Fortunately,
it looks like it doesn't overload the active antenna, because there's
no correlation visible between its transmissions and the noise level
in the other bands.
Because the antenna was mounted in a very provisional way, we couldn't
leave it running. But we're slowly getting there... :-)
Update 29 March 2012:
Tonight (we usually work on this on our club evening on Thursday)
we profited from the evening light (due to spring days and daylight
saving time), to semi-permanently install a cable to the planned
antenna location on the roof.
Some people asked what kind of active antenna we're experimenting
with: the most promising one so far is a PA0RDT Mini-Whip.
To be continued...
Update 8 March 2012:
Some more tests done, with the active antennas now placed at a
different location on the roof and with better grounding.
The results were a lot better and quite encouraging, although not perfect yet.
To be continued...
Update 23 February 2012:
We did tests with two active antennas. Unfortunately, the noise level
they received was way too high: only the strongest broadcast signals
were audible.
Since the top part of the building is all metal, I don't think so much
noise can leak out of the building. More likely, either both active
antennas are broken, or they picked up this noise due insufficient grounding.
To be continued...
Update 14 February 2012:
We made another step forward: we got a key with which we can open the door
that gives us access to the roof, so we can now physically go to the other
side of our hole in the wall, and thus actually do something with cables
that we feed through the hole...
Update 25 November 2011:
Yesterday, the hole in our wall was installed, as demonstrated by the
below picture, showing some daylight coming in through the pipe through the wall.
It's not so clear in this picture, but the pipe is more than 25 cm long, and finishes on
the outside with a 45 degree bend downwards, to keep rainwater out.
Next challenge is to mount some temporary antenna on the outside...
Update 17 November:
Finally good news: we've been told that next week the hole in the
wall will be made for us!
We won't be able to install our big masts and beam antennas (for the
club's use) yet, but a wire or active whip for the WebSDR should be
possible soon!
Update 1 September:
By popular request, here's an update:
Unfortunately, there is still no real progress, but based on regular
communication with several people in the faculty, we have good reason
to believe that in the end we will ge it just takes
much longer than I even imagined...
Update 28 February:
Don't despair, we still intend to bring our receiver online again,
but the antenna cable feedthrough still has not been installed.
However, we did recently hear that a list is being made of all the
minor changes that still need to be made to the building, and that
our antenna facilities are also on that list.
Update 4 January:
Happy new year everyone!
Unfortunately, there's no news yet about our antenna connection.
Thanks for all the mails I got, expressing support and/or with tips
on how to feed an antenna signal through a window that cannot be opened.
Unfortunately, those tips are not usable: our only window is to the
corridor, not to the outside. That is because our club room is in a
part of the building that originally was only meant for storage, so
no outside windows were installed.
Update 16 December 2010:
It looks like it will take a while more before we can install an outside antenna.
Today I've done a preliminary experiment with an indoor antenna, but that
was not yet successful.
Several people have e-mailed me with the suggestion to use a flat cable feed-through
for windows.
Unfortunately, our new room does not have a suitable window for that.
Update 26 November 2010:
We're back -- well, somewhat.
Over the past couple of weeks, we have moved all our stuff to our new club room (although much of it still
has to be unpacked),
and since yesterday, we have an internet connection there.
Unfortunately though, we do not yet have any possibilities for feeding an antenna cable through the wall.
It is also still very unclear how long it will take until it this will be arranged.
Background:
Since Wednesday November 3 (2010), this WebSDR receiver has been offline.
This is because the radio club at the University of Twente, where this receiver is hosted,
had to move to a new building, along with the entire department of electrical engineering.
We knew this was coming and we were busy preparing the move (dismantling our antennas,
packing our equipment, etc.).
On October 29 we were told that we had to empty the old room by November 4, which is earlier
than we expected. That's why we could not announce this more in advance, and could not
make the transition smooth by first preparing the new room.
73, Pieter-Tjerk, PA3FWM (e-mail about this topic: qrt AT websdr.org)Providing Clarity on the Definitions of Source Data Verification (SDV) and Source Data Review (SDR)
In a risk-based monitoring (RBM) update released in January, TransCelerate defined source data verification (SDV) as “the process by which data within the case report form (CRF) or other data collection systems are compared to the original source of information (and vice versa).” Source data review (SDR) on the other hand, was defined as “a review of source documentation to check quality of source, review protocol compliance, ensure critical processes and source documentation are adequate.” Therefore, according to TransCelerate, “SDR is not a comparison of source data against CRF data.”
These are welcome clarifications, especially as this distinction between SDR and SDV — introduced by TransCelerate in their initial position paper — provides an important framework within which to establish guidance on where to most effectively focus site monitoring attention. Unfortunately, and despite the refined definitions offered by TransCelerate, there remains a level of confusion and lack of common understanding on the specific scope of SDV and SDR. For example, some suggest that SDV is intended to mean the simplest form of transcription checking, where the goal is to simply ensure that what is in the eCRF matches what is in the patient source and is not missing any relevant information documented in the source. If this interpretation is taken literally, then a blood pressure value observed consistently in both source and eCRF — that does not however support human life — would nevertheless be accepted by the monitor since the eCRF matches the source. Similarly, the data for a key assessment that is missing from both eCRF and source would not be questioned since there is consistency in the lack of data.
We know that these scenarios are not realistic in practice. Any relatively well-trained site monitor would not accept the anomalous blood pressure value (assuming a programmed EDC edit check did not already catch it) and would follow up with the site staff to have it corrected. And the missing assessment data would also be brought to the site’s attention to determine whether the assessment was actually missed or if instead the source data for the assessment was misplaced. So in reality SDV should be thought of as more than simply a blind consistency check between source and eCRF. Its primary purpose is indeed to verify that the information transcribed into the eCRF is complete and consistent with source records, but also that eCRF and source together meet various protocol and clinical expectations. This overlaps to some degree with TransCelerate’s definition of SDR (e.g., with respect to checking for protocol compliance), but I suggest a complementary overlap since it leverages the organized structure of the eCRF data to guide additional verification of the source that may have been missed during SDR.
SDR also needs some clarification. While its primary focus is indeed on review of the source documentation, discoveries made during that source review may necessitate a check of the eCRF data. Perhaps the most important example is the discovery of an adverse event (AE) that is evidenced in the source documents but not clearly noted as such. For example, a subject may have an unusually high blood pressure recorded but no indication of hypertension recorded. Similarly, there may be one or more out-of-range analytes on a lab report but without acknowledgement of an AE. In these situations there is a significantly increased probability that the site staff also failed to record the AE in the eCRF and the site monitor is rightly compelled to check the eCRF to ensure that the AE is properly recorded there.
So SDR and SDV should not be thought of as completely exclusive of each other. The key to effective execution of these concepts in an RBM implementation is to ensure clear, consistent understanding of them within and across clinical teams, and to ensure that site monitors follow the definitions in a disciplined manner.
What are your thoughts on TransCelerate’s presentation of SDR and SDV, and the clarifications offered here?
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