单选题Among the main propulsion units on board the ship with the same capacity, the lightest one is（）.A steam engineB steam turbineC gas turbineD diesel engine

The main idea of the text might be（ ）

[A]female power and liberation in Norway

[B]the significance of Henric Ibsen's play

[C]women's status in Norwegian firms

[D] the constitution of board 'members in Norway

Halogenated hydrocarbon， Halon in short form，is used on board ship as ________ ．

A.fire-extinguishing medium

B.a standard fire test

C.a non-combustible material

D.a fire main

Preparations for loading cargo on board ship.

Where should the GMDSS radio log be kept on board ship?______

A.In the Captain’s office

B.In the sea cabin

C.At the GMDSS operating position

D.Anywhere on board the vessel

Whom must be informed at once if any cases of death are discovered on board?

A.The master of a ship

B.The local doctor

C.The local Quarantine officer

D.The ship's agent

When there is not a chief officer on board, ____ should keep and write up the ship’s logbook.

A.the assistance officer

B.the captain

C.the officer on duty

D.the third officer

When the ship, its main propulsion device equipped with clutch, arrived at the port and finished with the engine, the correct operation should be______.

A.disengaging the clutch firstly, then stopping the main engine

B.stopping the main engine firstly, then disengaging the clutch

C.stopping the cooling water pump firstly, then stopping the main engine

D.stopping the main engine and disengaging the clutch at the same time

Among the possible causes of unexpected constant inclination of the floating ship is ______．

A.Consumption of on board liquids

B.Miscalculation of loads

C.Liquid transfer through open valves

D.Flooding due to hull damage