單項(xiàng)選擇題

Many sheath-screw davits have markings to indicate the maximum angle to which they should be cranked out. If the angle is exceeded，the davit（）.

A.may jam against the stops
B.will not automatically position the boat at the embarkation station
C.screw may come out of the sheath
D.will chafe against the falls and may cause their failure

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單項(xiàng)選擇題

Maintaining the close tolerances in diesel fuel pumps and injectors requires the use of（）.

A.fuel/water separators
B.day tanks
C.injector test stand
D.fuel filters

單項(xiàng)選擇題

Lubricating oil should be changed on a heavy duty diesel engine when（）.

A.it gets dark in color
B.a sample rubbed between fingers feels thin
C.it has been in use for a specified interval
D.it no longer supports combustion

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Many sheath-screw davits have markings to indicate the maximum angle to which they should be cranked out. If the angle is exceeded，the davit（）.

你可能感興趣的試題

Maintaining the close tolerances in diesel fuel pumps and injectors requires the use of（）.

Lubricating oil should be changed on a heavy duty diesel engine when（）.

Many sheath-screw davits have markings to indicate the maximum angle to which they should be cranked out. If the angle is exceeded，the davit（）.