题目内容

Some see themselves as the provider of ideas, ________ others view their role as essentially managerial.

A. when
B. therefore
C. while
D. otherwise

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The teacher evaluated the performance of each of his students who ________ evaluated his performance.

A. by turn
B. in turn
C. at turn
D. on turn

Our television set is out of order. Could you come and __________ it for us?

A. see through
B. see out
C. see to
D. see over

酸碱指示剂的理论变色范围为:

A. pKHIn士1
B. 不能确定
C. KHIn士1
D. KHIn

标定盐酸和氢氧化钠标准溶液常用的基准物质是:

A. 高锰酸钾和硼砂
B. 重铬酸钾和邻苯二甲酸氢钾
C. 碳酸钠和邻苯二甲酸氢钾
D. 氧化锌和氯化钠

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