A.butterfly valve
B.globe valve
C.gate valve
D.non-return valve
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A.overcooling
B.poor cooling
C.overloading
D.unloading
A.the discharge temperature low
B.the discharge temperature high
C.the discharge pressure rise
D.the inter-stage pressure low
A.the lubrication
B.the cooling
C.the moisture separation
D.the valves
A.without first cooling it
B.without first heating it
C.without first unloading it
D.without first loading it
A.air
B.moisture
C.cooling water
D.lubricant
最新試題
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）
The shipboard oil pollution emergency plan will be invalid after （）
（）connectors hold best if a wire is accidentally pulled or a connection becomes loose.
The cetane rating of diesel fuel is an indication of the （）
Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the（）
（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
Diesel engine air start system check valves are opened by （）
（） is not installed on the main switchboar.
Which one is NOT the ‘clear grounds’ for a more detailed inspection?（）
Under MARPOL Code the ship to which it applies has to carry （）