A.A
B.AL
C.ALL
D.all
E.a
A.ipconfig/all
B.ipconfig/release
C.ipconfig/renew
D.ipconfig
听力原文: W: May I speak to Mr Li?
M: Which Li, ma' am? There are two Lis here.
W: Oh? Mr Li, head of the Export Section.
M: Oh, the chief? That's Mr Michael Li, then.
W: Is that right?
M: I'm sorry, but Mr Li's gone on a trip.
W. I see. When will he return?
M: He'll be back next Monday.
W: All right. I'll call on Monday again.
M: May I have your name?
W: Mrs Dorothy Preston.
M: Mrs Dorothy Preston. Is that Dorothy with a "y"?
W: That' s right.
M: I'll tell Mr Li you called when he returns.
W: Thank you.
Where is Mr. Li?
A.He is on holiday.
B.He is out for lunch.
C.He is on a trip.
A.在图形窗口显示所有的图形对象和绘图界限范围
B. 恢复前一个视图
C. 显示所有在绘图界限范围内的图形对象
D. 显示绘图界限范围