A lifeboat is weight tested by lowering to near the waterand loading to capacity with weight evenly distributed. Itis then lowered into the water and released. This test mustbe done at least once every（）.

[单选题]Prior to lowering the lifeboat，the most important item to check is the（）.A . oarsB . sailC . boat plugD . life preserver

[单选题]The signal given to commence lowering the lifeboats is（）.A . 3 short blasts of the ship's whistleB . 1 short blast of the ship's whistleC . 3 long blasts of the ship's whistleD . 1 long blast of the ship's whistle

[单选题]A．nd the cars are tested for defects before leaving the factory.A．functionsB．faultsC．motionsD．parts

[单选题]F．ire and lifeboat stations are required to be listed on the _____.A．ships articlesB．muster listC．bunk cardD．forecastle card

[单选题]The engine in a covered lifeboat is fueled with（）.A . keroseneB . unleaded gasolineC . diesel oilD . liquefied ga

[单选题]If the steersman of your lifeboat gives the command Way enough，you should（）.A . complete the stroke，hold your oar out from the boat and level with the waterB . dip the blade of your oar into the water and leave it thereC . lift your oar to a vertical

[单选题]In launching a lifeboat，when should the tricing pendants be released?（）.A . Before the boat is lowered from the stowage positionB . As soon as the boat-fall blocks clear the davit headC . After the limit switch is activatedD . After all people have b

[单选题]Over eight months the scientists tested 20 drugs, all with negative results. Finally they tested the anticonvulsant drug ethosuzimide. Researchers found that the drug extended the life span of roundworms from 16. 7 days to 19. 6 days, a 17 percent in

[单选题]When launching a lifeboat，the tricing pennants should be released（）.A . before the boat is lowered from the stowed positionB . as the boat-fall blocks break clear of the davit headC . before the boat is lowered from the embarkation levelD . after the

[单选题]This used piston had been tested and approved as a spare part by the （） during last annual repair.A . agentB . shipchandlerC . surveyorD . engineer