下表是各处类型企业在2000年工业产值中所占的比重(%)，根据下表

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问题单项选择题

下表是各处类型企业在2000年工业产值中所占的比重(%)，根据下表回答下列问题

表中Ⅲ的数值是( )

A．1.9

B．2.5

C．2.0

D．2.2

答案

参考答案：D

不定项选择

下图为某正电荷Q产生的某区域的电场线分布图，a、b是电场中的两点。将电荷量为q=5×10^-8C的正点电荷（试探电荷）置于a点，所受电场力为2×10^-3N，则下列判断正确的是

A．a点的场强大小为4×10⁴N/C，方向向右

B．将电荷量为q的负点电荷放于a点，a点场强大小仍为4×10⁴N/C，方向向左

C．将点电荷q从a点移走，则该点的电场强度为零

D．b点处的电场强度小于4×10⁴N/C

补全对话，情景问答

根据下面的对话内容，在对话的空白处填上恰当的表达，使其意思通顺、合理、结构完整。

A: Kip. May I ask you for help?

B : Sure. What is it?

A: I've got to move this Saturday. Do you think you could help me for a few hours?

B: I think so. I've got something to do in the late afternoon, but I'm _________________(1) in the morning.

A: Excellent. It won't ___________________(2) you more than two or three hours.

B: No problem. Then ___________________(3) should I be there?

A: Would 11: 00 be too early?

B: No. that's fine.

A: Great. So I'll see you ____________________(4) at 11: 00. Thanks again, Kip.

B: ___________________(5).