A、power output
B、friction and wear
C、indicated pressure
D、rated horsepower
更多“The primary duty of lube oil is to reduce （） between the working parts of an engine.”相关的问题
A、A.notify the duty officer, reduce the engine speed, take some measures to remove failures B、B.notify the duty officer and stop the engine immediately, find the cause and remove failures C、C.notify the C/E D、D.notify the captain
A、CSS duties are always assumed by passenger vessels，dry cargo vessels，or tankers in that order of precedence B、The CSS must be established by mutual agreement between the ships concerned C、A tanker should never be assigned CSS duties unless only tankers are present D、The first vessel to arrive at the distress incident is designated as the CSS
A、CSS duties are always assumed by passenger vessels，dry cargo vessels，or tankers in that order of precedence B、The CSS must be established by mutual agreement between the ships concerned C、A tank vessel should never be assigned CSS duties unless only tank vessels are present D、The first vessel to arrive at the distress incident is designated as the CSS
A、The list of column names in the FOREIGN KEY clause can be a subset of the list of column names in the primary key of T2 or a UNIQUE constraint that exists on T2. B、The list of column names in the FOREIGN KEY clause can be a subset of the list of column names in the primary key of T1 or a UNIQUE constraint that exists on T1. C、The list of column names in the FOREIGN KEY clause must be identical to the list of column names in the primary key of T2 or a UNIQUE constraint that exists on T2. D、The list of column names in the FOREIGN KEY clause must be identical to the list of column names in the primary key of T1 or a UNIQUE constraint that exists on T1.
A、A declaration is required and duty is involved on the total cost B、No declaration is required since this is considered routine maintenance C、A declaration is made and duty is charged on the materials only D、A declaration is made，but duty is charged on the labor only
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