—You know that you were driving at 100 k

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问题选择题

— You know that you were driving at 100 kilometres an hour, _____?

— No, officer, I couldn't have been. This car can't do more than 80. [ ]

A. don't you

B. weren't you

C. did you

D. are you

答案

答案：A

单项选择题

程序中头文件type1.h 的内容是#define N 5#define M1 N*3程序如下:#define "type1.h"#define M2 N*2main (){ int i； i=M1+M2； printf("%d\n", i)；) 程序编译后运行的输出结果是( )。

A．10

B．20

C．25

D．30

单项选择题

烧结过程应尽可能去除硫，因为硫将对钢材产生（）。

A.热脆

B.冷脆

C.裂纹

D.疏松