上行超速保护测试时，下面哪个参数可以不用更改（）。A、Duty SpeedB、Rated RPMC、Nom SpeedD、Creep speed
上行超速保护测试时，下面哪个参数可以不用更改（）。
- A、Duty Speed
- B、Rated RPM
- C、Nom Speed
- D、Creep speed
相关考题：
下面有关轿厢上行超速保护装置正确的是()A.动作时，应使一个电气安全装置动作B.复位时，应不需要接近轿厢或对重C.包括有速度监控元件和减速元件D.对重装有安全钳时，可以不再加装上行超速保护装置
Where one of two vessels is to keep out of the way the other________.A.shall not keep her course but shall keep her speedB.shall not keep her course and speedC.shall keep her course but change her speedD.shall keep her course and speed
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A vessel hearing a fog signal forward of her beam has not determined if risk of collision exists. She shall reduce speed to ______.A.moderate speedB.safe speedC.half speedD.bare steerageway
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If your vessel is the stand-on vessel in a crossing situation ______.A.you must keep your course and speedB.you may change course and speed as the other vessel must keep clearC.the other vessel must keep her course and speedD.both vessels must keep their course and speed
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填空题电梯上行超速保护在（）开关动作时才动作。