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【单选题】
柴油机在进气行程中，进入气缸的是A.
新鲜空气
B.
纯燃油
C.
氧气
D.
可燃混合气
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反馈参考答案：
举一反三
【单选题】如图所示,已知U S1 =90V,U S2 =60V,R 1 =6 W , R 2 =12 W , R 3 =36 W ,用叠加定理计算 I 1 为( )
A.
4A
B.
2A
C.
1A
D.
3A
【简答题】Despite increasing its turnover, this company was unable to keep its strong market share, which, like its share price, ended below its 2006 level.
【单选题】Despite its efforts, the newspaper industry still cannot satisfy the readers owing to its ______.
A.
failure to realize its real problem
B.
tendency to hire annoying reporters
C.
likeliness to do inaccurate reporting
D.
prejudice in matters of race and gender
【单选题】如图所示,已知U S1 =90V,U S2 =60V,R 1 =6 W , R 2 =12 W , R 3 =36 W ,用叠加定理计算 I 2 为( )
A.
2A
B.
-2A
C.
-1A
D.
3A
【单选题】Despite its efforts, he newspaper industry still cannot satisfy the readers owing to its______.
A.
failure to realize its real problem
B.
tendency to hire annoying reporters
C.
likeliness to do inaccurate reporting
D.
prejudice in matters of race and gender
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