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【单选题】
下列有关格式输入函数scanf的叙述中正确的是 ( )A.
输入项可以是C语言中规定的任何变量，并且在任何变量前必须加地址符号“&”
B.
可以只有格式控制项，没有地址列表项
C.
在输入数据时，必须规定精度。如：scanf('%4.2f'，&d) ;
D.
当输入数据时，必须指明变量地址
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举一反三
【单选题】设A 是 m*n 矩阵,非齐次线性方程组 AX=B 对应的齐次线性方程组为 AX=B ,如果 m
A.
AX=B必有无穷多组解
B.
AX=B必有唯一解
C.
AX=0必有非零解
D.
AX=0只有唯一零解
【单选题】听力原文：M: Excuse me, I was wondering if it was possible to join the library. W: Are you a student in our college? M: No, Im not. But I heard that it was possible to join. W: Thats right. The 18 years of...
A.
Free.
B.
18 pounds per year.
C.
25 pounds per year.
D.
125 pounds per year.
【简答题】Can you tell us about your ideal kind of employer?
【单选题】What is the function of your business advertisement?
A.
To tell the viewers everything about your products in order to attract them to buy them.
B.
To tell the viewers how to pay for the services and products.
C.
To tell the viewers something about your products in order to encourage their curiosity.
D.
To encourage the viewers to buy your products as much as possible.
【单选题】－I was wondering if we could go skiing on the weekend. － good．
A.
Sound
B.
Sounded
C.
Sounding
D.
Sounds
相关题目：
【单选题】设A 是 m*n 矩阵,非齐次线性方程组 AX=B 对应的齐次线性方程组为 AX=B ,如果 m
A.
AX=B必有无穷多组解
B.
AX=B必有唯一解
C.
AX=0必有非零解
D.
AX=0只有唯一零解
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