【名词&注释】
单向阀(check valve)、截止阀(stop valve)、锅炉给水泵、鼓风机(blower)、惰性气体系统(inert gas system)
[单选题]货物装载的个人保护设备至少应配备有()套。
A. 4
B. 3
C. 1
查看答案&解析
举一反三：
[单选题]锅炉汽压为0.5MPa(≈51m水柱高)，其中水位距热水井液面高为2m，锅炉给水泵的管路阻力以泵静扬程10%计，其工作扬程约为( )。
A. 2m
B. 51m
C. 53m
D. 58.3m
[单选题]如果惰性气体系统(inert gas system)鼓风机将用于排气，则其空气进口应安装在____。
A. 截止阀
B. 盲断装置
C. 单向阀
D. 锁紧装置
[单选题]Oil oxidation as a result of excessively high lube oil temperature, is harmful to a diesel engine Because
A. oil foaming will always occur
B. large quantities of oil are consumed
C. lube oil viscosity is always decreased
D. corrosive by-products are usually formed
[单选题]I think the hatch covers ________ all fixed up by you
A. was
B. were
C. be
D. been
[单选题]Will we connect the motor with the fresh water pump? No, the pump is ( )_
A. in good order
B. out of order
C. works well
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