The reason why more and more of the large merchant vessels are being powered by medium-speed diesel engines is .A.they operate between 150 and 450 rpmB.they are connected to the propeller by gearingC.their smaller size and weightD.they can be connected directly to the propeller without gearing
The reason why more and more of the large merchant vessels are being powered by medium-speed diesel engines is .
A.they operate between 150 and 450 rpm
B.they are connected to the propeller by gearing
C.their smaller size and weight
D.they can be connected directly to the propeller without gearing
相关考题:
Previous studies show that parents tend to be aware of sleep problems in older children and adolescents and that pediatric practitioners are ( ) likely to identify sleep problems in these age group.:A、less…lessB、less…moreC、more…lessD、more…more
As it is known that the aim of every business is to make profit as possible.() A. as manyB. as muchC. more
以下说法错误的是()。A.more命令一次显示一屏文本,显示满之后会自动停下来,并在终端底部打印出“—More—”B.使用more命令时,如果要显示下一行,可按Space键C.使用more命令时,如果要显示下一页,可按Enter键D.使用more命令时,如果要在显示下一屏文本之前进行清屏,可使用“-c”参数
【多选题】以下说法错误的是()A.more命令一次显示一屏文本,显示满之后会自动停下来,并在终端底部打印出“—More—”B.使用more命令时,如果要显示下一行,可按Space键C.使用more命令时,如果要显示下一页,可按Enter键D.使用more命令时,如果要在显示下一屏文本之前进行清屏,可使用“-c”参数