海船船员考试
单选题The majority of automatic mooring winches are spur geared to improve the backward efficiency of the gear train for rendering（）A spur gearedB screw gearedC worm gearedD belt driven
题目
spur geared
screw geared
worm geared
belt driven
相似问题和答案
第1题：
A spur gear pump should be operated with the discharge valves ______.
A.slightly opened
B.throttled
C.fully opened
D.halfway opened
第2题：
Mooring winch should be equipped with mechanical brakes which are capable of holding ______.
A.half the breaking strength of the mooring line
B.the full breaking strength of the mooring line
C.the maximum expected tension of the mooring line
D.50% over the working tension of the mooring line
第3题：
The spur geared mooring winches have advantages over worm geared ones in .
A.higher efficiency of the gear train while reversing
B.the higher gear ratio
C.the multi-start feature
D.higher recovering speed
第4题：
B:danger
C:endorsement
D:surprise
第5题：
B:encourage
C:spend
D:require
第6题：
Mooring winch should be equipped with mechanical brakes capable of holding ______.
A.half the breaking strength of the mooring line
B.the full breaking strength of the mooring line
C.the maximum expected tension of the mooring line
D.50% over the working tension of the mooring line
第7题：
A storm is forecast for the area where your vessel is moored. For its safety you should put ______.
A.more slack in the mooring lines
B.a strain on the mooring lines
C.chafing gear on the mooring lines
D.grease on the mooring lines
第8题：
[A] levered [B] geared [C] handled [D] triggered
第9题：
B:appeal
C:require
D:encourage
第10题：
The House Speaker and the temporary President of the Senate are usually（）
Aelected by the majority party
Bchosen from the majority and minority parties
Cmembers of the majority party
Dchosen freely from the Congressmen and Senators
C
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