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问题 单项选择题

回油孔喷油泵欲增大其供油提前角，正确的调整方法是（）。

A．沿正车方向转动凸轮

B．沿倒车方向转动凸轮

C．降低柱塞下方的调节螺钉

D．增厚套筒下方的调整垫片

答案

参考答案：A

解析：沿正车方向转动凸轮一个角度、升高柱塞或降低套筒均可使供油提前角增大。

单项选择题

某地方政府在成交通知书发出后不与成交供应商签订采购合同，对其应承担的法律责任，下面说法不正确的是：( )

A．应当限期签订采购合同

B．应当给予警告

C．应当并处罚款

D．给供应商造成损失的应当承担民事责任
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单项选择题

The following questions present a sentence, part of which or all of which is underlined. Beneath the sentence, you will find five ways of phrasing the underlined part. The first of these repeats the original; the other four are different. If you think the original is best, choose the first answer; otherwise choose one of the others.

These questions test correctness and effectiveness of expression. In choosing your answer, follow the requirements of standard written English; that is, pay attention to grammar, choice of words, and sentence construction. Choose the answer that produces the most effective sentence; this answer should be clear and exact, without awkwardness, ambiguity, redundancy, or grammatical error.

While most early robot designers equipped their robots with "legs," more recent robot designers have opted for movable treads, which make continual contact with the ground over a wide area in contrast with specific spots on the ground.（）

A. in contrast with

B. rather than at

C. as opposed to at

D. instead of

E. as against
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