题目内容
（请给出正确答案）
A.Globe valve
B.Butterfly valve
C.Gate valve
D.Packless valve
简答题官方参考答案
（由简答题聘请的专业题库老师提供的解答）
更多“In the piping systems of a vessel，what type of valve gives the least resistance to fluid f”相关的问题
If no gaskets are used in the piping joints of a Freon system, the joints must be .
A.finished joints
B.welded joints
C.ground joints
D.soldered joints
Moisture in a refrigeration system can cause _____.
A.freezing the expansion valve closed
B.corrosion of system piping
C.improper temperature regulation
D.all of the above
A.Contamination of the cargo
B.Flash points
C.Reid vapor pressures
D.Specific gravities
A.crossover
B.runaround
C.come-along
D.manifold
A.The indicator
B.The piping system
C.The fuel injection
A.The cargo piping system shall be fixed
B.Flanged joints shall be used for pipe sizes exceeding 2 inches in diameter
C.Piping through bunker spaces may be run through a pipe tunnel
D.Connections at bulkheads must be made so that the plating does not form part of a flanged joint
A.restriction in refrigerant piping
B.air and non-condensable gases in the condenser
C.water in the refrigerant
D.flooding back of liquid refrigerant from the evaporator
A.come-along
B.crossover
C.manifold
D.runaround
A.approved oily-water separating equipment
B.a fixed or portable containment system at the shore connection
C.a spare pump in case the main pump is inoperative
D.at least one outlet accessible from the weather deck
What is the purpose of sub cooling R-12 in the condenser？ .
A.to increase the system efficiency by sensible heat transfer
B.to stop the liquid from flashing
C.to reduce the load on the compressor
D.to remove latent heat of vaporization and the suction piping transfer
The word "discharge" as used in Pollution Prevention Regulations applies to oil _____.
A.leaked into navigable waters
B.poured into navigable waters
C.pumped into navigable waters through a fixed piping system
D.all of the above
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