【单选题】【消耗次数：1】
骨管长约（）cm。
①
0.5-1
②
1-2
③
2-3
④
3-4
参考答案：
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相关题目
【简答题】
设 A = {1, 2=,2, 4=,3, 3=}，B = {1, 3=,2, 4=,4, 2=}，则交关系A∩B等于：[填空1]
【简答题】
设 A = {1, 2=,2, 4=,3, 3=}，B = {1, 3=,2, 4=,4, 2=}，则对称差关系A⊕B等于：[填空1]
【简答题】
设 A = {1, 2=,2, 4=,3, 3=}，B = {1, 3=,2, 4=,4, 2=}，则求差关系A-B。
【判断题】
设 A = {1, 2=,2, 4=,3, 3=}，B = {1, 3=,2, 4=,4, 2=}，则并关系A∪B的定义域dom(A∪B)等于：{1,2,3,4}。
①
正确
②
错误
【简答题】
设 A = {1, 2=,2, 4=,3, 3=}，B = {1, 3=,2, 4=,4, 2=}，则交关系A∩B的值域ran(A∩B)等于：[填空1]
【简答题】
设 A = {1, 2=,2, 4=,3, 3=}，B = {1, 3=,2, 4=,4, 2=}，求交关系A∩B的值域ran(A∩B)。
【简答题】
设 A = {1, 2=,2, 4=,3, 3=}，B = {1, 3=,2, 4=,4, 2=}，求差关系A-B的域fld(A-B)。
【简答题】
设 A = {1, 2=,2, 4=,3, 3=}，B = {1, 3=,2, 4=,4, 2=}，则并关系A∪B的定义域dom(A∪B)等于：[填空1]
随机题目
【单选题】
A: If things go on like this, we shall destroy ourselves. B: [填空]
①
Really? Congratulations!
②
Come on. Its not that bad.
③
Yes, you are good at it.
④
Its none of my business.
【单选题】
A: I got a job from Dell B: Thats great news. Im very happy for you. A: Thanks. I feel like celebrating. Lets go have a beer. [填空].
①
Its on me
②
Its so fine today
③
Its your turn
④
It is rather expensive
【单选题】
A: Richard, class begins at 9, and you are late. B: I know, but I missed my bus, Im sorry. B: [填空]. You have to be here on time.
①
Thats no excuse
②
Dont mention it
③
You neednt be
④
No problem
【单选题】
A: Dont tell me youve got a headache again. B: [填空].
①
Sorry, I wont be late next time
②
Youre right, Im just joking
③
All right, I wont say it
④
OK, youve made your point
【单选题】
A: Im sorry. Those shoes are not available in your size. B: [填空].
①
No use saying sorry. Thats a real let down
②
Im truly grateful for your help
③
Its just as Ive expected
④
Thats a pity. Thank you anyway
【单选题】
A: [填空]? B: Yes, Id like to open a savings account.
①
What do you want to do, sir
②
Why have you come here
③
Do you have anything to do here
④
Can I help you, sir
【单选题】
A: Bill told me he could not come here because his father was ill. B: [填空]
①
Its good.
②
Thats bad.
③
He is impolite.
④
What a pity!
【单选题】
A: Do you know Marks phone number? B: [填空] . A: OK. I might as well look it up in the phone book.
①
Just a second
②
Not that I know of
③
I cant think of it now
④
Why ask?
【单选题】
A: How long can I keep the book? B: [填空].
①
Any period longer than four weeks, you will be fined
②
Four weeks, but you can renew it if you need it longer
③
You can check it on the computer over there
④
At most four weeks if you dont mind
【单选题】
A: Is it time for us to set off now? B: [填空]. We’ll have to wait for one more hour.
①
Certainly, it is
②
Thats all right
③
Sorry, I am afraid not
④
Sorry,its too long