题目内容

电路的工作状态及其特征是什么

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异步电动机是电气安装工程中应用最广的电动机，在电网负荷中约占60%，在各种电气传动中约占90%。( )

A. 对
B. 错

第一节说明：每段对话后有一个小题，请从题中所给的A、B、C三个选项中选出最佳选项。(每段对话后有15秒种的停顿，以便回答问题和阅读下一问题。) Who is the man possibly talking to

A doctor.
B. A teacher.
C. His mother.

TT系统是指在中性点直接接地的电力系统中，将电气设备的外露可导电部分均接公共的保护线(PE)或公共的保护中性线(PEN)的保护系统。( )

A. 对
B. 错

阅读下面短文，从短文后所给各题的四个选项(A、B、C、D)中选出能填入相应空白处的最佳选项。 Linda was a few minutes late. Wilson (36) the office when she got there. His secretary told her he (37) back in a few minutes. She (38) sit down and wait for a few minutes in outer office. "I’ll never get this job," she (39) herself. For a moment she wanted to (40) the building. Just then, Wilson came (41) the door and hurried into his office. A few minutes (42) his secretary took Linda in and introduced her, Linda apologized (43) Wilson didn’t seem to (44) . They chatted casually (随便地) for a few seconds and then (45) . He (46) her letter of application. "You’ve never worked in radio or television before, (47) " he said. Now she was (48) that she would not get the job. Wilson asked her (49) questions. (50) he seemed impressed with her other qualifications (资格). She was (51) when he asked her if she could start soon. "I wonder if you’d mind (52) next month" he asked (53) . (54) seemed she had got the job (55) .

A. told
B. spoke
C. said
D. talked