试题与答案

分度值为0.02mm的游标卡尺,主尺刻度间距与游标刻线间距的差是0.02mm。

题型:判断题

题目:

分度值为0.02mm的游标卡尺,主尺刻度间距与游标刻线间距的差是0.02mm。

答案:

参考答案:

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题型:选择题

用下图装置进行实验,下表中实验结果能说明结论的是(    )

 结论

A.

电石

溴水

稳定性:水>C2H2>Br2

B.

盐酸

石灰石

苯酚钠溶液

酸性:HCl>H2CO3>苯酚

C.

盐酸

FeS

溴水

还原性:S2—>Br>Cl

D.

浓盐酸

KMnO4

KBr溶液

氧化性:Cl2> KMnO4 >Br2

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题型: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.

For real numbers a, b, and c, is ab=bc+3 ?()
(1) ab=3b
(2) b+3=c

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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