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【多选题】
下列哪些因素能引起
A.
高温
B.
中毒
C.
缺氧
D.
心律失常
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参考答案:
举一反三
【判断题】减压阀不工作时阀口开度增大。
A.
正确
B.
错误
【单选题】Experts estimated that the (manuscript) was worth $20,000.
A.
操纵
B.
混乱的
C.
手稿
【判断题】Everybody assembled in the hall where they were welcomed by the secretary.()
A.
正确
B.
错误
【判断题】减压阀工作时阀口开度增大。
A.
正确
B.
错误
【简答题】简述类和对象的关系
【单选题】Experts estimated that the (manuscript) was worth $20,000.
A.
混乱的
B.
操纵
C.
手稿;手抄本
【单选题】如图所示的进口节流调速回路中,溢流阀正常溢流,当负载恒定不变时,如果考虑溢流阀的调压偏差,将节流阀口开度调大,泵的工作压力()。
A.
增大
B.
减小
C.
基本不变
D.
可能增大也可能减小
【单选题】离心泵的阀开大时,则()。
A.
吸入管路的阻力损失减小
B.
泵出口的压力减小
C.
泵入口真空度增大
D.
泵工作点的扬程升高
【单选题】What happened to the three judges?
A.
They were detained by the judicial department.
B.
They were prevented from their positions.
C.
They were threatened by the criminal gangs
D.
They justly judged Ms Escobedo's daughter's case.
【单选题】The experts estimated that the unemployment rate would reach ______
A.
3.5%
B.
3.8%
C.
3.28%
D.
6.6%
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