A smooth, tapered pin, usually of wood

1、Failure of fuel injection is usually d

Failure of fuel injection is usually due to trouble in the （）.Aexhaust valvesBmechanical lubricatorsCcooling water pumpsDfuel injection pum

2、The usual symptoms of cavitation in a

The usual symptoms of cavitation in a centrifugal pump is （）.Anoise and vibrationBan increase in discharge pressureCan increase in suction pressureDlifting of the relief valve

3、Which of the following usually causes

Which of the following usually causes a tree to grow unhealthy?A Giving a tree a special shape and a definite height.B Removing small side br...

4、All of the following records are usual

All of the following records are usually maintained by the watch-standing officers aboard a vessel except the（）.Adeck logbookBofficial logbookCcompass record bookDchronometer error book

5、A smooth，tapered pin，usually of wood，u

A smooth，tapered pin，usually of wood，used to open up the strands of a rope for splicing is called a(n)（）.AbattenBbench hookCawlDfid

6、All of the following records are usual

All of the following records are usually maintained by the watch-standing officers aboard avessel EXCEPT the（）.Adeck logbookBofficial logbookCcompass record bookDchronometer error book