Aluminum lifeboats are subject to damage by electrolytic corrosion (the aluminum being eaten away). In working around boats of aluminum you must be very careful（）.

[单选题]The order to enter the lifeboats will be given from the（）.A . bridgeB . forward stationC . aft stationD . any hold in which the stevedores are working

[单选题]Aluminum pistons have （） coefficient of thermal expansion compared with those of cast iron.A . higherB . lowerC . the sameD . none of the above

[单选题]On open lifeboats，the purpose of the wire stretched between the davit heads is to（）.A . keep the movement of the davits at the same speedB . keep the davits from slipping when they are in the stowed positionC . prevent vibration during lowering of th

[单选题]Stretchers are fitted in lifeboats to provide a（）.A . place for people to lie downB . means for rigging the sailC . place for rowers to brace their feetD . suitable means for water to drain below the footing

[单选题]The lifeboats and liferafts were（）with the provisions of the regulations annexed to the Convention.A . put on boardB . installedC . fittedD . equipped

[单选题]An advantage of aluminum pistons, when compared to cast iron pistons is （）.A . greater high temperature strengthB . better heat conductivityC . greater weight per cubic inchD . increased resistance to wear

[单选题]An aluminum piston has lower inertia and higher coefficient of （） compared to that of cast iron.A . viscosityB . twisting momentsC . inertiaD . thermal expansio

[单选题]Most covered lifeboats will right themselves after capsizing if the（）.A . passengers are strapped to their seatsB . fuel tanks are not less than half fullC . sea anchor is deployed to windwardD . lower ballast tanks are filled with water

[单选题]What is the subject of the paragraph?（）A . international tradeB . international transportC . international logisticsD . international economy

[名词解释] reperfusion damage