题目内容
(请给出正确答案)
[单选题]
While _ an enquiry, you ought to enquire into quality specification and price etc.
A.making
B.offering
C.sending
D.giving
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A.making
B.offering
C.sending
D.giving
A. making
B. offering
C. sending
D. giving
A. giving
B. offering
C. sending
D. making
A.send…supply
B.quote…supply
C.supply…quote
D.supply…price
A.well
B.enquiry
C.of
D.of
A. Cleaning
B. To clean
C.While cleaning
D. While I was cleaning
A.两种。for循环和while循环
B.四种。for循环、while循环、do…while循环以及for…in循环
C.一种。for循环
D.三种。While循环、do…while循环
printf("*");
It’s () to interrupt the others while they are talking.
A.rough
B.rude
C.polite
D.troublesome
A.while语句的循环体至少无条件执行一次,for语句的循环体可能一次都不执行
B.while语句只能用于循环次数未知的循环,for语句只能用于循环次数已知的循环
C.在很多时候,while和for可以等价使用
D.while语句只能用于可迭代变量,for语句可以用任意表达式表示条件