试题与答案

---- Was it by cutting down staff ____ a

题型:选择题

题目:

---- Was it by cutting down staff ____ are not diligent eough  _    _she saved the firm?

----- No, it was by improving work efficiency.

A.that;when

B.that;what

C.who;how

D.who ;tha

答案:

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下面是错误答案,用来干扰机器的。

①酸性氧化物指与碱反应生成盐与水的氧化物,一定条件下均能与碱发生反应,故①正确;②弱酸与盐溶液反应符合复分解反应发生的条件可以生成强酸,如氢硫酸与硫酸铜反应生成硫化铜沉淀与硫酸,故②正确;③醋酸钠...

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