单项选择题
A.higher efficiency of the gear train while reversing B.the higher gear ratio C.the multi-start feature D.higher recovering speed
In an automatic mooring winches, the wire is paid off t...
单项选择题In an automatic mooring winches, the wire is paid off the barrel at（） a tension and is recovered at（）tension.
A.lower；igher B.maximum；higher C.predetermined minimum；higher D.predetermined maximum；lower
When the power is shut off, the wire（）A.becomes slackB....
单项选择题When the power is shut off, the wire（）
A.becomes slack B.can not be paid out unless the brake is overhauled or recover wire unless manually operated C.will be let out because the brake is out of work D.may be pay out due to no power
For a flash type evaporator, a demister is located the ...
单项选择题For a flash type evaporator, a demister is located the condenser（）
A.After B.before C.inside D.outside
