【简答题】听录音,选择你所听到的句子。 ( ) 1. A. This is my father. B. This is my friend. C. This is my grandpa. ( ) 2. A. The fish is nice. B. The fish is big. C. The picture is nice. ( ) 3. A. I have forty penc...
【简答题】已知X与Y的相关系数Corr(X,Y)=0.25,则Corr(2X+3,4Y+8)=____。
【简答题】阅读理解。 1. This is _______ for Kesington Hotel in London. A. a notice B. a postcard C. a picture D. an advertisement 2. A single room and a double room in Kesington Hotel cost _______ each night. A. £ 6...
【简答题】阅读理解 Now, please look at this picture. This girl is my sister. Her name is Sally! She is l3 years old. She is in Class Two, Grade Seven. This boy is aunt's son. He is my cousin. His name is Jeff. He i...
【单选题】What is the correct speed input to an ARPA used for traffic surveillance?
【简答题】听材料,回答问题。 1. What picture is the woman showing the man? A. A picture of the Great Wall. B. A picture of Beijing Zoo. C. A picture of the History Museum. 2. How many places did the woman visit besides ...
【单选题】A recent spate of launching and operating mishaps with television satellites led to a corresponding surge in claims against companies underwriting satellite insurance. As a result, insurance premiums ...
A.
Since the risk to insurers of satellites is spread over relatively few units, insurance premiums are necessarily very high.
B.
When satellites reach orbit and then fail, the causes of failure are generally impossible to pinpoint with confidence.
C.
The greater the performance demands placed on satellites, the more frequently those satellites break down.
D.
Most satellites are produced in such small numbers that no economies of scale can be realized.
E.
Since many satellites are built by unwieldy international consortia, inefficiencies are inevitable.
【简答题】完型填空。 A picture 1 on my desk. This is a picture 2 Tom’s family(家). The man is Tom’s 3 . A 4 is behind Tom. She is 5 mother. 6 teachers. A girl is 7 the picture, too. She is Tom’s sister. 8 name is Amy...