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【单选题】
以下选项中属于合法的Java标识符的是()。A.
public
B.
3num
C.
_age
D.
*name
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举一反三
【单选题】Compared to a naturally aspirated diesel engine, a supercharged diesel engine has_________.
A.
a cylinder air charge of higher pressure
B.
increased pumping losses
C.
less valve overlap
D.
reduced blow-by
【简答题】女性最常见的骨盆类型是 :( )
【单选题】下面代码的输出结果是 weekstr = "星期一星期二星期三星期四星期五星期六星期日" weekid = 3 print(weekstr[weekid*3: weekid*3+3])
A.
星期二
B.
星期三
C.
星期四
D.
星期一
【单选题】下面代码的输出结果是 weekstr = "星期一星期二星期三星期四星期五星期六星期日" weekid = 3 print(weekstr[weekid*3: weekid*3+3])
A.
星期四
B.
星期二
C.
星期一
D.
星期三
【单选题】The marine diesel engine is a type of diesel engine used on shipsThe _____ of its operation is not very difficult to understand.
A.
principle
B.
principal
C.
cause
D.
case
【单选题】下面代码的输出结果是 weekstr = " 星期一星期二星期三星期四星期五星期六星期日 " weekid = 3 print( weekstr[ weekid * 3: weekid * 3+3 ] )
A.
星期一
B.
星期二
C.
星期三
D.
星期四
【单选题】下面代码的输出结果是 weekstr = "星期一星期二星期三星期四星期五星期六星期日" weekid = 3 print(weekstr[weekid*3: weekid*3+3])
A.
星期五
B.
星期四
C.
星期一
D.
星期三
【单选题】The diesel engine is also called compression ignition engine because______. A compression stroke is one of the four-strokes of a diesel engine.
B.
the diesel engine is ignited by the heat of compression not by spark .
C.
the diesel engine has a very high compression ratio.
D.
Both A and B
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