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【判断题】
通常规定:电源容量在 180KVA 以上,电动机容量在 7KW 以上的三相异步电动机可直接启动。A.
正确
B.
错误
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举一反三
【判断题】I. Decide whether the following statements are true (T) or false (F). 1. The satellite launched by Venusian scientists hasn't sent back signals of the Earth.
A.
正确
B.
错误
【简答题】设备内的真空度愈高，即说明设备内的绝对压强( )。 A.愈大 B.愈小 C.愈接近大气压
【单选题】S1:M.V. Blue Whale, Bridge to Mate. Swing out Lifeboat No.1 and report. Over.S2:M M.V. Blue Whale, Mat to Bridge. Lifeboat No.1 swung out, Sir.S1:M.V. Blue Whale, Bridge to Mate. Lower Lifeboad No.1 a...
A.
The number of lifeboats launched.
B.
The number of liferafts launched.
C.
The number of persons in each lifeboat.
D.
The number of persons in each lifeboat.
【单选题】SECTION 1 (10 points) Listen to the following passages and then decide whether the statements below are true or false. There are 10 questions in this section, with 1 points each. You will hear the rec...
A.
正确
B.
错误
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