如何变更Google Gears的设定？

[问答题] 什么是Google Gears？

[单选题]Lubrication for the main reduction gears used with diesel engines is usually supplied byA．oil from the main engine sumpB．an independent lube oil systemC．the stern bearing head tankD．the stem bearing sump tank

[单选题]In using reduction gears to obtain efficient propeller speeds, （）.A . they must be located at the after end of the engineB . they can only be used with one engine at a timeC . they eliminate the need for controllable pitch propellersD . they are conn

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