有些材料在温度很低的情况下电阻为零,这种材料叫超导材料.假如科学家在常温下研制出

题型:选择题

问题:

有些材料在温度很低的情况下电阻为零,这种材料叫超导材料.假如科学家在常温下研制出这种材料,那么它合适制作(  )

A.白炽灯的灯丝

B.加热器的电热丝

C.熔断器的熔丝

D.输电线的导线

考点:导体,绝缘体
题型:选择题

首字母填空(10小题*1=10分)

My friend is a taxi driver. He has been a taxi driver for ten years. It’s a nice job m 小题1: of the time. He can meet a lot of people. He always works at night because there is too much t  小题2:  during the day. He usually goes home between two o’clock in the morning. There are some very s小题3:  things, which often happen at night.

One day my friend was t小题4:  a woman back home from a party at three o’clock in the morning. She has her little dog with here. When they got to her house, she found she had lost her key. So my friend waited in the car with the dog while she climbed in t 小题5:  the window. My friend waited and waited. After half an hour of honking(鸣汽车喇叭)he d 小题6:  to find out what was going on. He t小题7:  the dog to a tree and started to climb in.At that moment some policemen came. They thought my friend was a t 小题8: . L 小题9: , the woman came downstairs. She must have gone to sleep and f 小题10:  about my friend and the dog.

题型:选择题
若正数x,y满足
1
x
+
4
y
=1
,则xy的最小值是 ______.
题型:选择题

银行内部操作风险可包括()。

A.银行内部管理体制不健全

B.银行内部岗位设置不合理,责权不明确

C.银行业务人员不按操作流程要求或规章制度办理业务

D.银行业务系统风险

E.银行内部档案管理不规范

题型:选择题

将小米浸泡后加适量水可蒸小米饭、煮小米粥。( )

题型:选择题

完成句子 (共6题;每空1分,满分13分)

小题1:做这件事占用了我们很多时间。

Doing it ______ ______ much of our time.

小题2:我渐渐意识到你的建议真的很有用。

I ______ ______ realize that your advice is really useful.

小题3:她说没有她父母的支持,她不能渡过难关。

She said she couldn’t ______ ______ without the support of her parents.

小题4:我担心房子被烧毁,要是你不记得关煤气的话。

I am afraid the house might be______ ______, if you don’t remember to shut the gas.

小题5:她的孩子患了严重的感冒。

Her baby is ______ ______ a heavy cold.

小题6:你与你的新同学相处如何啊?

How are you ______ ______ ______ your new classmates?

更多题库