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问题 判断题

绕线转子异步电动机，转子回路串接电阻越大，启动电流越小。

答案

参考答案：对

填空题

Questions 14-18


·Using the information in the text, complete each sentence 14-18, with a word or phrase from the list below.
·For each sentence (14-18), mark one letter (A-G) on the Answer Sheet.
·Do not mark any letter twice.
  • A. $150
  • B. safe
  • C. agreements
  • D. drivers who can’t drive on because of the flat tire
  • E. a flat tire
  • F. provide a kind of temporary support to the flat tire
  • G. more than $150

According to the passage, Quickwheel is a tool that can be used to replace ______.
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单项选择题

关于CT机的准备，错误的是

A．训练X线球管
B．对球管从高千伏、毫安到低千伏、毫安的多次曝光
C．避免突然过冷、过热的情况出现
D．保护球管
E．CT值校准
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