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怎样拍好老人照?

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Heavy fuel oils generally have an upper average ash content of 0~1% by weight.Which of the following conditions could be expected if the ash content increase above this amount?()

A. Glazing of the cylinder liners
B. Increase valve wear
C. Excessive oil pumping
D. Increase fuel consumptio

起动机电缆线长度应尽可能短些。

A. 正确
B. 错误

简述公务员辞去公职的限性条件。

收单机构要对商户进行不定期回访和检查,回访检查至少每()一次,并如实填写《商户日常检查表》。

A. 一旬
B. 月
C. 季
D. 年

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