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问题 解答题

暑假里，小明计划去游泳池游泳，他计划每次游200米，相当于在游泳池游4个来回，游泳池长多少米？

答案

200÷（4×2），

=200÷8，

=25（米），

答：游泳池长多少米．

单项选择题

The following data sufficiency problems consist of a question and two statements, labeled (1) and (2), in which certain data are given. You have to decide whether the data given in the statements are sufficient for answering the question. Using the data given in the statements plus your knowledge of mathematics and everyday facts (such as the number of days in July or the meaning of counterclockwise), you must indicate whether.

Is integer x divisible by 48 ？（）
(1) x is divisible by 16.
(2) x is divisible by 12.

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.

B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.

C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.

D. EACH statement ALONE is sufficient.

E. Statements (1) and (2) TOGETHER are NOT sufficient.
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单项选择题

关于高炉有效容积利用系数说法正确的是（）

A、利用系数高，产量就高

B、用系数低，产量就高

C、利用系数高，产量就低

D、无关系
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