更多"[单选题]The two-stroke cycle begins wi"的相关试题:
[单选题]The piston is in diesel engine.
A.a shaped-pot component
B.a pot-shaped component
C.a pot-shaping component
D.a potted shape component
[单选题]The simplest means of piston cooling is
A.at splash or spray
B.by splash or spray
C.from splash and spray
D.for splash and spray
[单选题]The piston whilengne is in operation moves up and down,thus causing the rotation movemenof the
A.crankcase
B.slipper
C.bearing
D.crankshaft
[单选题]The piston moves up in the cylinder and compresses the charged air while both inlet and out let valves
A.are closed
B.remain half-opened
C.are opened
D.remain haif-closed
[单选题]The piston ring should be flat and free from
A.twist
B.smooth
C.constant
D.balance
[单选题]Piston may be made in aluminum alloy in order to keep the weight for balancing purposes at high speed.
A.up
B.bottom
C.down
D.top
[单选题]The piston is forced downward as the high pressure gases expand until it the exhaust ports.
A.uncovers
B.encloses
C.covers
D.closes
[单选题]As the piston moves about of the way up,it closes the inlet ports and exhaust ports in the two-stroke diesel engine.
A.one half
B.one third
C.one quarter
D.one fifth
[单选题]In a four-stroke diesel engine,the cycle requires four separate strokes of___
A.the crankshaft
B.the piston
C.the cylinder
D.the connecting rod
[单选题]PG创建序列时加了cycle选项，当序列满时会报错。
A.正确
B.错误
C.不一定
[单选题]C62AK、C62AT、C62BK、C62BT、C64K、C64H及C64T型敞车局部地板面承受货物重量，当两枕梁直接承受货物重量且两枕梁承受的货物重量相等时，全车装载重量可以达到（）。
A.57吨
B.车辆容许载重量
C.车辆标记载重量
D.58吨
[判断题]当支路信号速率大于C-3标称速率时，采用正码速调整，令C1C1C1C1C1= C2C2C2C2C2=00000，相应的S1=S2=D。
A.正确
B.错误
[判断题] 电容C1和电容C2并联，则其总电容是C＝C1+C2。
A.正确
B.错误
