轴系中心线的偏差度应（）。

【名词&注释】

耐磨性(wear resistance)、绝缘性(insulating)、三角形(triangle)、中心线(center line)

[单选题]轴系中心线^{(center line)}的偏差度应（）。

A. 小于允许值
B. 大于允许值
C. 交点在δmax-φmax三角形内
D. 交点在δmax-φmax三角形外

查看答案&解析 查看所有试题

学习资料：

[单选题]按轴承允许负荷校中时，下述正确的是（）。

A. δ＝0.05～0.10mm/m，φ＝0.10～0.15mm/m
B. 各轴承的负荷在允许值内
C. 各轴承的负荷在允许值内且合理分配，轴段内的应力、弯矩、转角均在允许值内或取合理数值
D. 都不对

[单选题]桦木层压胶木是铁梨木的代用材料，具有材质致密、坚硬、耐热、绝缘性好、成材率高，缺点是（）。Ⅰ.耐磨性差；Ⅱ.耐蚀性差；Ⅲ.耐水浸性差；Ⅳ.刚性差；Ⅴ.脆性大。

A. Ⅱ＋Ⅲ
B. Ⅰ＋Ⅴ
C. Ⅱ＋Ⅴ
D. Ⅱ＋Ⅳ

[单选题]Keep compartment （） as the gas given off can be dangerous.

A. well ventilated
B. well clean
C. in good order
D. more room

[单选题]The indications of a scavenge fire are excessive black smoke, （） and peeling from scavenge trunking.

A. turbo-chargers surge
B. spark seen from the drains
C. paint blistering
D. all above are right

[单选题]The position of the piston parts in relation to each other is secured by means of （） in the crown.

A. a mark
B. a bolt
C. a dowel pin
D. a measuring tool

[单选题]Mist detectors used on large low-speed main propulsion diesel engines monitor and check for the presence of （）.

A. fuel oil vapor at the sludge tank vent
B. unburned fuel vapors in the scavenge air receiver
C. lube oil vapors in the crank case
D. lube oil vapors in the engine room

本文链接：https://www.51bdks.net/show/o5lwvx.html