【名词&注释】
螺旋桨(propeller)、进出口(import and export)、喷油泵(fuel injection pump)、锅炉蒸发量
[单选题]螺旋桨C区内的缺陷采用()工艺进行修理。
A. 不可焊补
B. 焊补
C. 有机胶黏剂粘补
D. 修磨
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学习资料:
[单选题]与废气锅炉蒸发量D有正确关系的是()。
A. 蒸汽焓值h越高,蒸发量D越大
B. 废气锅炉废气进出口温差(t1-t2)越小,蒸发量越大
C. 废气锅炉废气进口温度t1越高,蒸发量越大
D. 主机排气流量G越大,燕发量越小
[单选题]在检查和调整主机回油阀调节式喷油泵的供油量均匀性时,对始终点调节式喷油泵,可通过转动进回油阀阀杆下的调节螺钉改变顶杆长度,从而调节柱塞的有效行程。当进油阀的顶杆伸长时,柱塞的有效行程(),回油阀的顶杆伸长时,柱塞的有效行程()。
A. 变大/变小
B. 变大/变大
C. 变小/变大
D. 变小/变小
[单选题]连杆螺栓如发现少量螺纹损坏则应该()。
A. 用板牙修牙
B. 用锉刀修牙
C. 换新
D. 用砂纸打磨
[单选题]A cast steel strong back is fitted in way of the combustion space to help absorb ().
A. flame temperature
B. fuel oil
C. air movement
D. gas force
[单选题]Here some oil in the oily water separator, as a result of its lower (), will separate and rise into the oil collection space.
A. temperature
B. viscosity
C. density
D. velocity
[单选题]Smaller engines can be made more rigid than large ones and may not have ().
A. through bolts
B. dividing walls
C. sloping surfaces
D. relative angle
[单选题]The piston ring grooves for a standard engine are ()
A. chromium-plate against wear
B. anti-corrosion treated
C. white metal lined against wear
D. flame hardened against wear
[单选题]The power output of a turbocharged diesel engine will drop if the cooling water flow through the after-cooler is interrupted because the ().
A. turbocharger stalls
B. exhaust pressure increases
C. air charge density decreases
D. scavenge effect increase
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