正常主胰管内径是()。
A.≤1mm
B.≤2mm
C.≤3mm
D.≤4mm
E.≤5mm
参考答案:B
— Would you like to watch the movie with me tonight?
— , but I have too much homework to do. [ ]
A.I'd love to
B.That's all right
C.It doesn't matter
D.Not at all
2000年~2005年,我国农村发电量占用电量比重最大的年份是()。
A.2000年
B.2001年
C.2003年
D.2005年