【名词&注释】
水压试验(hydrostatic test)、工作压力(working pressure)、涡轮增压器(turbocharger)、冷却水腔(cooling water-jacket)、增压器壳体
[单选题]经修理的涡轮壳体要经过()的水压试验,合格后方可使用。
A. 1倍工作压力
B. 1.5倍工作压力
C. 2倍工作压力
D. 2.5倍工作压力
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学习资料:
[单选题]发生在高压油泵柱塞上的穴蚀以()高压油泵最严重。
A. 回油阀调节式
B. 回油孔调节式
C. 始点调节式
D. 终点调节式
[单选题]废气涡轮增压器壳体腐蚀的原因主要有()等造成。Ⅰ.硫酸腐蚀;Ⅱ.穴蚀;Ⅲ.高速气流引发的腐蚀;Ⅳ.冷却水腔的海水腐蚀;Ⅴ.喷水腐蚀。
A. Ⅱ+Ⅲ
B. Ⅰ+Ⅲ
C. Ⅰ+Ⅲ+Ⅴ
D. Ⅰ+Ⅱ+Ⅲ
[单选题]相邻轴两连接法兰的轴心线平行的现象称()。
A. 偏移
B. 偏心
C. 偏中
D. 曲折
[单选题]In addition to lubricating, cylinder oil assists in forming a gas seal and contains () which clean the cylinder liner.
A. additives
B. water
C. grease
D. acid solutio
[单选题]The crankshaft is of the semi built type, with the journal () the forged or cast steel crank throws.
A. being shrunk into
B. to be shrunk into
C. to be shrunk with
D. shrinking into
[单选题]The gudgeon pin is carried in () in the piston skirt.
A. the bearing
B. the crosshead
C. bosses
D. bridge
[单选题]With four-stroke engines, it takes four revolutions of the crank shaft to make () power stroke(s).
A. 1
B. 2
C. 4
D. 8
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