关于物体的内能下列说法中正确的是( ) A.温度相同,质量相同的物体,内能必相同

题型:选择题

问题:

关于物体的内能下列说法中正确的是(  )

A.温度相同,质量相同的物体,内能必相同

B.物体的机械能增大时,内能也增大

C.晶体凝固时温度不变,内能也不变

D.500℃铁块放入20℃冷水中后,铁块的内能变小了

考点:内能的概念
题型:选择题

根据对话内容,从对话后的选项中选出能填入空白处的最佳选项,并在答题卡上将该项涂黑。(E涂BC; F涂CD)选项中有两项为多余选项。

Daughter:Dad.You love me, don't you?

Father:Of course, I do.小题1:

aughter:Well, I saw this great offer for a free phone here in the newspaper, and …

Father:小题2:

Daughter:Well, the phone is free … after the$50 I pay is returned to me.

Father:Ah, so that's the catch. 小题3:

Daughter:Dad.All my friends have one.

Father:Ah, I don't know.小题4:

Daughter:But the monthly charge for this service is only$29.99, with 1,000 free weekday minutes nationwide, and unlimited weekend minutes.

Father:I don't know.

Daughter:Please Dad.With the new phone you won't have to worry about me while I'm driving the new car.

Father:小题5:

Daughter:The new car you'll need to buy so I can use the phone.

A.Ah… what's on your mind?

B.New car? What new car?

C.Free? Nothing's ever free.

D.What did you do to the new car?E.And why on earth do you need a phone?

F.They always charge a lot for the service.

G.But what is the term of the service agreement?

题型:选择题

四逆汤和理中丸二方组成中均含有的药物是()

A.附子

B.人参

C.桂枝

D.干姜

E.白术

题型:选择题

传输设备工程现场勘察监理要求,要勘察那些内容?

题型:选择题

普通钢材( )代替锅炉压力容器钢材。

A.不能
B.可以
C.在一定条件下可以
D.不限制

题型:选择题

[多]

必燥著母脊,故使多脊痛。______

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