The marine bellows joints are attached in the accommodation only
The bellows joints should be attached to anchors
The associated piping should be thrown into the water like as anchors
The connecting piping with the joints should be fixed firmly
第1题：
A thrust bearing is used with a propulsion diesel engine to ____.
A.control axial movement of the crankshaft
B.transmit engine thrust to the propeller shaft
C.absorb vibrations in the propeller shafting
D.prevent propeller thrust from being transmitted to the hull
第2题：
What requires a Report of Marine Accident，Injury or Death?
A.Collision with a bridge
B.Injury beyond first aid
C.loss of life
D.All of the above
第3题：
Allowances may be made for the expansion and contraction in piping by the use of expansion joints or ().
A.Unions
B.Retractable flanges
C.Union bulkhead fittings
D.Bends or loops in the line
第4题：
Which of the following best describes how locks are used in DB2?（）
第5题：
What is NOT a requirement of cargo piping installed in tank vessels carrying grade D or E cargo ONLY ________．
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
第6题：
A large metallic device，mounted directly in the piping (usually located at the dock near the point where the vapor hose is attached)，designed to prevent the passage of a rapidly moving flame through the piping is called a ______.
A.flame arrestor
B.flame screen
C.detonation arrestor
D.detonation blocker
第7题：
What is considered a Serious Marine Incident?
A.an allision that results in $500 damage to a boat dock
B.an injury to a crewmember，passenger，or other person which requires professional medical treatment beyond first aid
C.grounding of a vessel on a sandbar that does not result in injuries and/or any damage to the vessel
D.None of the above
第8题：
A NP–movement/WH-movement
B NP–movement/Aux-movement
C AUX-movement/WH–movement
D WH–movement/AUX-movement
第9题：
In order for combustion to occur inside a piping system such as a vapor collection header in a marine emmission control system, there must be ______.
A.fuel
B.oxygen
C.ignition
D.All of the above
第10题：
To maintain control of updated rows for commit processing
To ensure only committed changes are altered by another application
To allow two applications to update the same row of data simultaneously
To prevent multiple applications from accessing the same data simultaneously