For one or two types of engine, the piston and rod can be withdrawn downwards from the cylinder into the crankcase and then out through the （）.

[单选题]For one or two types of engine,the piston and rod can be withdrawn downwards from the cylinder into the crankcase and then out through （）.A . the cylinder coverB . the bottom of bed-plateC . the sumpD . the crankcase door

[单选题]The engine has one or two group of fuel pumps, depending upon （）.A . the number of fuel valvesB . the number of cylindersC . the speed of engineD . the power of engine

[单选题]There are two common types in page replacement algorithm : stack and non-stack strategies.When a real page number increase only stack algorithm can increase the hit rate monotonously.In the following replacement algorithm, which one belongs to non-st

[单选题]Skimming is one of the major types of selective reading. It differs from normal reading,_________ not all of the material is read.A． in thatB． in whichC． at thatD． by which

[试题](b) Briefly explain the two types of informal communication known as the grapevine and rumour. (6 marks)

[单选题]A． two stroke diesel engine exhaust temperature will be lower than a four stroke diesel engine of the same displacement because the _____. ① MEP is lower and the scavenging air is cooling the exhaust gases ② valve overlap in a four strokeA．①B．②C．① an

[单选题]For a given size engine, the two-stroke/cycle diesel engine will deliver more power than a four-stroke/cycle diesel engine because （）.A . it has a longer power strokeB . more air gets into the cylinder each strokeC . it develops twice as many power s

[单选题]A two-stroke diesel engine exhaust temperature will be lower than a four-stroke diesel engine of the same displacement because the （）(1) MEP is lower and the scavenging air is cooling the exhaust gases(2) valve overlap in a four-strokeA . (1) only is

[单选题]Passage TwoOne day I was at the airport waiting for a ticket to New York and the girl in the ticket office said, "I'm sorry, I can't sell you a ticket. Our computer is down.""If your computer is down, just write me out a ticket.""I can't writ

[单选题]H．aving two eyes, instead of one, is particularly useful for ______.A． seeing at nightB． seeing objects far awayC． looking over a wide areaD． judging distances