When we run a plastic comb through our( )the comb and the hair may have static electricity.

[单选题]When the fuel oil is burning in the combustion chamber, it _____.A．gives up large amount of heatB．gives off large amount of heatC．gives up large amount of steamD．gives off large amount of steam

[单选题]When the fuel oil is burning in the combustion chamber, it （）.A . gives up large amount of heatB . gives off large amount of heatC . gives up large amount of steamD . gives off large amount of steam

[单选题]------ Shall we have our picnic tomorrow?-----______it doesn’t min.A． Until B. While C. Once D. If

[单选题]We ______our dinner when a policeman came to the door.A． just hadB． have just hadC． just have hadD． had just had

[单选题]F．or the Wartsila 50DF, the complete combustion compared with the lean-combustion can decrease the following results ____ .①Exhaust temperatures ②NOx emissions ③Propeller efficiency ④Output ⑤Cylinder knocking ⑥Fuel supplyA．①②B．③⑥C．④D．④⑤

[单选题]Which statement about diesel engine combustion is true?（）A . Combustion does not begin until the piston starts down on the power strokeB . Maximum combustion pressure is reached before TDCC . Turbulence in the cylinder causes a delay in ignitionD . M

[多选题] COMB单板支持哪些客户业务？（）A . GEB . STM-16C . STM-64D . E1

[单选题]We have got to [abideby] our commitment.A.stick toB.persist inC.safeguardD.

[单选题]We have got to [abide]by our commitment.A.stick toB.persist inC.safeguardD.

[单选题]We have done all we could and now our cherished project is at the mercy of