题干

下列说法错误的是(  )

A:绝缘体不善于导电,是因为绝缘体内几乎没有电子存在

B:与丝绸摩擦的玻璃棒带上了正电,这是因为玻璃棒上电子转移到了丝绸上

C:用带负电的橡胶棒靠近轻质小球时,小球被吸引,小球可能不带电

D:一般情况下,石墨、水银是导体;花生油、陶瓷是绝缘体

上一题 下一题 0.0难度 选择题 更新时间:2019-10-12 04:38:04

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A

同类题3

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

        My daughter Chloe is starting out in college in the fall. With her newfound independence will come the newfound responsibilities of dealing with money.____Now I have a few lessons I'd like to share with Chloe, and with anyone else starting out in college.

____OK,this is almost the only lesson you need. The biggest reason you get into money problems is that you spend money you don't really have. Then you end up in the hole, and it's hard to get out of the hole. You work too many hours to keep up with your spending. And you end up with a life that's about nothing but trying to pay for all the spending on something you don't really need.____

        Make a very simple budget. It's a terrible thing for people who've never done a budget, but it will become very simple and easy if you know how to do it.____If the bills add up to more than theincome, remove some bills. Pay bills right away. If you have the money, pay thebill as soon as it comes in. You can usually do this online, but if not, it's just a matter of writing a check, putting it in an envelope, and writing out an address—two minutes.____ If you let the bill­ paying get pushed back, it becomes a terrible thing.

      That's all you need to know. If you save when you're in college, avoid debt, and paybills on time, you're golden.

A.Why not enjoy your life in college?

B.Spend less than you earn.

C.So spend less, work less, worry less, be happier.

D.Like many young people, she hates thinking about money.

E.First, list your income, and then list your bills.

F.Find ways to get things done you need to get done.

G.Do this two­minute action at once, so you don't have toworry about it later.