212V190B型柴油机排气门间隙为（）。A.0.46mm±0.05mm B.0.4_爱下问搜题

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问题单项选择题

212V190B型柴油机排气门间隙为（）。

A.0.46mm±0.05mm

B.0.47mm±0.05mm

C.0.48mm±0.05mm

D.0.49mm±0.05mm

答案

参考答案：C

选择题

___ people food, jobs, housing, justice, compassion and equality is what a government should first consider after a natural disaster strikes．

A．Offered

B．Being offered

C．Offer

D．Offering

计算题

分解因式：a³﹣ab²．