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【单选题】
自由基攻击的细胞成分不包括:( )
A.
糖类
B.
蛋白质
C.
内质网膜
D.
线粒体
E.
DNA
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【单选题】If a diesel engine operates at ahout 700 r/min, then what is it known as?
A.
A slow-spcpd diesel engine
B.
A high-speed diesel engine
C.
A medium-speed diesel engine
D.
None of the above
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【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
查看完整题目与答案
【判断题】break语句可以用来结束某次循环重新开始下一次循环。
A.
正确
B.
错误
查看完整题目与答案
【单选题】A diesel engine is similar to a gasoline engine except that the former has no _____.
A.
cross-head
B.
cylinder
C.
connecting rod
D.
spark plug
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【单选题】The diesel engine is a type of _____.
A.
turbine engine
B.
gas turbine
C.
steam engine
D.
internal combustion engine
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【单选题】Friction, engine wear and oil consumption in a diesel engine are directly related to the _____.
A.
acidity of the oil
B.
pour point of the oil
C.
flash point of the oil
D.
viscosity of the oil
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【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
查看完整题目与答案
【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
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【简答题】机器就功能来说由哪四个部分组成?
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【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
查看完整题目与答案
相关题目：
【单选题】If a diesel engine operates at ahout 700 r/min, then what is it known as?
A.
A slow-spcpd diesel engine
B.
A high-speed diesel engine
C.
A medium-speed diesel engine
D.
None of the above
查看完整题目与答案
【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
查看完整题目与答案
【判断题】break语句可以用来结束某次循环重新开始下一次循环。
A.
正确
B.
错误
查看完整题目与答案
【单选题】A diesel engine is similar to a gasoline engine except that the former has no _____.
A.
cross-head
B.
cylinder
C.
connecting rod
D.
spark plug
查看完整题目与答案
【单选题】The diesel engine is a type of _____.
A.
turbine engine
B.
gas turbine
C.
steam engine
D.
internal combustion engine
查看完整题目与答案
【单选题】Friction, engine wear and oil consumption in a diesel engine are directly related to the _____.
A.
acidity of the oil
B.
pour point of the oil
C.
flash point of the oil
D.
viscosity of the oil
查看完整题目与答案
【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
查看完整题目与答案
【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
查看完整题目与答案
【简答题】机器就功能来说由哪四个部分组成?
查看完整题目与答案
【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
查看完整题目与答案