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碘量法测铜时，由于CuI沉淀强烈吸附I^-，使结果(偏高、偏低)，所以在接近滴定终点时，加入KSCN的作用是。

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在间接碘量法中，KI一般过量约4%的目的是，。该法主要的误差来源是__。

The tellers in Mrs. Vaughts bank were told to ________.

A. explain why they could not pay out all accounts
B. pay out accounts as requested
C. make the depositors believe that the bank was stand
D. pay out money as slowly as possible

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某地区近地面气温是32℃，这里对流层的厚度为16.8㎞。按一般规律，此时该地对流层顶的气温应是（）

A. -100.8℃
B. -68.8℃
C. -132.8℃
D. -42.8℃

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In recent years, computers are being made _______.

A. larger and more expensive
B. smaller and cheaper
C. more difficult to use
D. to work more slowly

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碘量法测铜时，由于CuI沉淀强烈吸附I-，使结果______(偏高、偏低)，所以在接近滴定终点时，加入KSCN的作用是______。

在间接碘量法中，KI一般过量约4%的目的是______，______。 该法主要的误差来源是______。

The tellers in Mrs. Vaughts bank were told to ________.

某地区近地面气温是32℃，这里对流层的厚度为16.8㎞。按一般规律，此时该地对流层顶的气温应是（）

In recent years, computers are being made _______.

碘量法测铜时，由于CuI沉淀强烈吸附I^-，使结果(偏高、偏低)，所以在接近滴定终点时，加入KSCN的作用是。

在间接碘量法中，KI一般过量约4%的目的是，。该法主要的误差来源是__。