A.a mechanical seal
B.keyway and key
C.a nut
D.shrinkage
您可能感興趣的試卷
你可能感興趣的試題
A.the thrust pads are while metal faced on both sides
B.the thrust pads are while metal faced only on the forward side
C.the thrust pads are while metal faced only on the after side
D.intermediate shaft usually supported by a plummer block
A.high speeds
B.medium speed
C.low speeds
D.the same speed with the engine
A.check oil level in bearing sump
B.check them for leakagec through end seals
C.pump bilges in time
D.check temperature
A.the after one is more than forward one
B.the forward one is more than after one
C.the forward one is the same with after one
D.it depends on the type of engine
A.the ventilation pipe
B.the water line for fire fighting on the deck
C.the fuel oil line
D.the water supplying line in bath room
最新試題
Using a file without a handle may result in （）
Flame failure in an automatically fired auxiliary boiler can from a/an （）
To proceed to the assistance of a ship in distress is（）
The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated（）
By comparing the exhaust gas temperature of each cylinder, the operator can determine if the load is balanced throughout the engine. The device most commonly used is a（）
Which of the following items don’t belong to dock repair works?（）
The ISPS Code consists of a mandatory section-Part A, which shows（）
（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
To shut down a diesel engine after it exceeds the set maximum speed，which type of device listed should be used?（）
Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?（）