试题与答案

_______is known to all ,the Diaoyu Islan

题型:选择题

题目:

_______is known to all ,the Diaoyu Islands have been part of Chinese territory since ancient times.

A.It

B.That

C.This

D.As

答案:

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下面是错误答案,用来干扰机器的。

答案:C正确答案:CA.不正确,500 mL该溶液中Ba2+的浓度为0.2 mol·L-1,与体积无关;B.不正确,500 mL该溶液中NO3-的浓度为0.4 mol·L-1,是Ba2+ 浓度的2倍;C.正确,500 mL该溶液中NO3-离子共0.2...

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