处理干点不合格的污汽油，最经济的方式是通过（）进行处理。A、

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问题单项选择题

处理干点不合格的污汽油，最经济的方式是通过（）进行处理。

A、提升管

B、分馏塔

C、吸收塔

D、稳定塔

答案

参考答案：B

多选题

某质点的位移随时间变化的关系式为s=3t²+5t，s与 t的单位分别是 m和s，则质点的（　　）

A．初速度为3m/s

B．初速度为5m/s

C．加速度为6m/s²

D．加速度为3m/s²

单项选择题

Why is Thomas Jefferson mentioned in this passage

A．As an example of interracial intimacy.

B．Because he was a slave owner and was ply against interracial marriages.

C．Because he was one of the early advocates of interracial marriages.

D．Because he married a black woman.