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【判断题】
密立根油滴实验仪器工作不需要预热十分钟。 ( )A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】_______by the rising price of gas, many car owners use their cars less frequently. [ ]
A.
Driven
B.
Being driven
C.
To drive
D.
Having driven
【简答题】影响群落结构的因素有哪些?
【单选题】The highest rate of skin cancers is found in teenagers who use sun lamps frequently.
A.
Right
B.
Wrong
C.
Not mentioned
【单选题】______________ learning grammar is to use it as frequently as possible.
A.
hoping to
B.
just in time to
C.
The key to
【单选题】All of us thought _________ no use talking about some unpractical matters frequently.
A.
that
B.
it
C.
this
D.
which
【单选题】用一只标准表校验一只电压表,当标准表的电压值为220V时,电压表的示数为220.5V,则被测表的绝对误差为( )伏
A.
-0.5V
B.
0.5V
C.
-1
D.
1
【简答题】A．Consult with her frequently. B．Use the computer regularly. C．Occupy the computer early. D．Wait for one's turn patiently.
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