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【单选题】
Directions: Each sentence has a word or phrase underlined. There are four words or phrase beneath each sentence. Choose the one word or phrase which would best keep the meaning of the original sentence if it were substituted for the underlined part. (每题10分,共10题) 1. In December 2017, the UN Security Council unanimously adopted Resolution 2396, which, among other things, obliges all UN Member States to develop the capability to collect, process, and analyze PNR to limit terrorist travel. ( VOA )A.
to force somebody to do something, by law, because it is a duty, etc.
B.
to help sb by doing what they ask or what you know they want
C.
to show your thanks when you got help
D.
to make somebody be willing to do something
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举一反三
【简答题】电容器的容抗大小与交流电的频率成（）关系，线圈的感抗大小与交流电的频率成正比关系。
【单选题】苯胺点就是以苯胺为溶剂与油品按体积比( )混合时的临界溶解温度。
A.
0.042361111111111106
B.
0.08402777777777777
C.
0.12569444444444444
D.
0.1673611111111111
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