区别固体Na2CO3和NaHCO3最好的方法是[ ] A．加热 B．两者分别与同

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问题选择题

区别固体Na₂CO₃和NaHCO₃最好的方法是[ ]

A．加热

B．两者分别与同浓度的稀盐酸反应

C．溶于水，比较其溶解性

D．两者分别加入NaOH溶液或石灰水

答案

答案：B

选择题

_______, his idea was accepted by all the people at the meeting.

A．Strange as it might sound

B．Strange although it might sound

C．As it might sound strange

D．As strange it might sound

判断题

吸收塔的检修时可不检查格栅梁及托架。（）