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问题 多选题

如图，U不变，R0为滑动变阻器，当滑片P向左滑动时，下列叙述正确的是

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A、电流表示数不变

B、电压表示数变大

C、电流表示数变小，电压表示数不变

D、电流表示数变大，电压表示数变小

答案

AB

单项选择题

千克米费用最小的运输方式是（）。

A.水运

B.公路运输

C.铁路运输

D.管道运输

E.航空运输
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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.

In the xy plane, is the point (4, -2) on the line l ？（）
(1) Point (1, 1) is on line l.
(2) The equation x=2-y describes line l.

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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