【判断题】【消耗次数：1】
材料的吸水性用含水率来表示
①
正确
②
错误
参考答案：
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相关题目
【简答题】
材料的质量吸水率和体积吸水率有何不同？什么情况下采用体积吸水率来反映材料的吸水性？
【单选题】
材料的吸水性是指（ ）。
①
指材料抵抗压力水或其他液体渗透的性质
②
材料在水中吸收水分达饱和的能力
③
材料在长期饱和水的作用下，不破坏、强度也不显著降低的性质
④
指材料在潮湿空气中吸收水分的能力
【简答题】
材料的吸水性是指材料在_____ 。
【单选题】
木材的含水量用含水率表示，指（ ）。
①
木材所含水的质量占木材干燥质量的百分率
②
木材所含水的质量占木材总质量的百分率
③
木材所含水的体积占木材总体积的百分率
④
木材所含水的体积占木材干燥后体积的百分率
【多选题】
绝热材料的导热系数与含水率的不正确关系是（）。
①
A含水率越大，导热系数越小
②
B导热系数与含水率无关
③
C含水率越小，导热系数越小
④
D含水率越小，导热系数越大
随机题目
【单选题】
A: What do you think of the book? B: [填空].
①
Its very interesting
②
I like it very much
③
I dont know the title
④
Its a pleasure
【单选题】
A: Its getting late. Im afraid I must be going now. B: Ok. [填空].
①
See you
②
Take it easy
③
Go slowly
④
Stay long
【单选题】
A: [填空]? B: Do you have a doll?
①
What do you want to sell
②
Shall I help you
③
Do you like a doll
④
What can I do for you
【单选题】
A: Im having a barbecue next Saturday. [填空]. B: Sure. That would be wonderful. What time?
①
I have invited some of my friends to come
②
Will you be free at that time?
③
Im looking forward to it
④
I was wondering if youd like to come
【单选题】
A: Ive got your invitation. B: Oh, good. [填空]
①
Thanks a lot.
②
Ill take it.
③
Can you come?
④
May I help you?
【单选题】
A: Would you mind if I turned the radio off? B: [填空].
①
Yes, please
②
No, go right ahead
③
Yes, thats all right
④
No, thank you
【单选题】
A: Would you like some wine? B: Yes, just [填空].
①
little
②
very little
③
a little
④
little bit
【单选题】
A: Would you like another cup of tea? B: Ive enough. [填空].
①
I would eat anything
②
Thank you by the way
③
Thank you all the same
④
No, anything will do
【单选题】
A: How far is the airport from here? B: [填空].
①
You can take a taxi
②
Ill fly to Paris
③
Its only six hundred dollars
④
Its about thirty miles