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【判断题】
横磁波(TM波)也称为电波(E波),磁场H是纯横向的,而电场E则具有纵向分量。A.
正确
B.
错误
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皮皮学刷刷变学霸
举一反三
【单选题】Why do Jack's students come to see him?
A.
. They want to get some help from Jack .
B.
. They want to talk to Jack about everything .
C.
. Jack is a very popular teacher .
D.
. Jack wants to show he's a good teacher .
【简答题】膳食中优质蛋白质主要来自动物性食品和()。 (A)大米 (B)玉米 (C)大豆及豆制品 (D)面粉
【单选题】12-20. Jack said the construction of the subway would be completed in October, _____ is a great surprise to us.
A.
this
B.
what
C.
that
D.
which
【简答题】听下面6段对话。每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项。 1. How are the shoes according to the woman? [ ] A. Too small. B. Just so-so. C. Pretty nice. 2. Where are they? [ ] A. In a restaurant. B. In a hosp...
【简答题】离心通风机的全风压是指 与 之和,其单位为 。
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