单项选择题
A.piston B.drum C.plunger D.barrel
The injector pump is operated by a cam which drives （） ...
单项选择题The injector pump is operated by a cam which drives （） up and down.
A.the needle valve B.the plunger C.the piston D.the cylinder
The indications of a scavenge fire are excessive black ...
单项选择题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
The indicated power of an engine can be obtained by tak...
单项选择题The indicated power of an engine can be obtained by taking the （）.
A.precautions B.rpm C.indicator cards D.B and C
