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【单选题】
在牛顿环干涉实验中，下列哪个说法是正确的（ ）A.
当照射光源为白光时，将看不到任何干涉条纹
B.
读数显微镜调焦是调节像距
C.
在计数条纹级次时，其干涉条纹的中心级次可从任何数算起
D.
在测量 K 级暗环的直径时测量内径比外径精度高
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【简答题】Answer the following questions according to the passage. 1) What is a specific feature of the Beijing 2008 Olympic s emblem? 2) What is the comment all the IOC officials gave to the design of the ...
【单选题】Question 4. Which of the following is taken as Newson’s act of genius that strikes everyone? ----- Passage 3 ----- (Para 1) As we pack for our summer holidays, no matter where we are heading, how long...
A.
His luggage is light and strong.
B.
His luggage provides the maximum volume of available space.
C.
His telescopic mechanism bisects the bag right down the middle.
D.
His telescopic mechanism keeps luggage light but increases the space inside.
【单选题】Question 1. 1. What is the frustration of modern travel according to the passage? ----- Passage 3 ----- (Para 1) As we pack for our summer holidays, no matter where we are heading, how long we will be...
A.
The destination of the travel.
B.
The distance of the travel.
C.
The plan-making of the travel.
D.
The telescopic handle of the suitcase.
【简答题】Choose one word from the word list below to fill in the blank in each of the following sentences. Change the form of the word where necessary: enhanced feature, mobile network, International Roaming a...
【简答题】1 Answer the following questions according to the passage. 1) What is a specific feature of the Beijing 2008 Olympic s emblem? 2) What is the comment all the IOC officials gave to the design of th...
【单选题】Which of the following is NOT the feature of the trip to Mars?
A.
It is a one-way trip.
B.
It is organised by an enterprise.
C.
It can carry creatures back to earth.
D.
Many people are interested in it.
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