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【单选题】
描述正弦交流电变化快慢的物理量是（）。A.
有效值
B.
频率
C.
初相位
D.
角频率
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举一反三
【单选题】There is a _________of impatience in the tone of his voice.
A.
dot
B.
hint
C.
notion
D.
phrase
【简答题】低压用的压力计弹簧管用（）固定在插座内。
【单选题】At the outset there is the tentative hint of the first-due company bullying its way through midtown traffic.
A.
simile
B.
metaphor
C.
personification
【简答题】老程序固有的特点是缺乏()。
【简答题】Case 2 I have an American friend. I have invited him several times, and at last he invited me to his home one day. He told me to get there at 3 p.m. I thought we could chat and have a meal together. I...
【简答题】低压用的压力计弹簧管用（）固定在插座内，高压用的压力计弹簧管是用（）连接的。
【单选题】What is the proper meaning of the word 'cue' in the second paragraph?
A.
Communication
B.
Hint
C.
Explanation
D.
Production
【简答题】Please fill the blank space below with terminology related to Chapter 1. The initial letter is given as a hint. P_______economics - A statement of fact.
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