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问题 单项选择题

在一定的范围内，氧化铝浓度和其电阻值之间存在对应关系，所以可以用（）的变化来判定氧化铝浓度的变化。

A、槽电压

B、槽电流

C、分子比

D、槽温度

答案

参考答案：A

填空题

SQL就是用户使用SQL语言来创建的一种查询。SQL查询主要包括 (12) 、 (13) 、 (14) 和子查询四种。
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单项选择题

An instruction is made up of operations that (68) the function to be performed and operands that represent the data to be operated on. For example, if an instruction is to perform the operation of (69) two numbers, it must know (70) the two numbers are. The processor’s job is to (71) instructions and operands from memory and to perform each operation. Having done that, it signals memory to send it (72) instruction.

A．get

B．make

C．push

D．pull
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