— __________ you got a computer? — Yes,

风积现象

He _______ the first place again, in which case, his mother will be more than happy.        [ ]

A. can't win

B. would have won

C. might win

D. could have won

在Internet普遍投入使用之前，EDI通信采用的是______。

A．LAN

B．PTP

C．INTERNET

D．VAN

药材"二杠茸"指的是（）

A.有2个侧枝的梅花鹿茸

B.有1个侧枝的梅花鹿茸

C.有2个侧枝的马鹿茸

D.有2个侧枝的花鹿茸

E.有3个侧枝的花鹿茸

在接触网不停电的前提下，自动闭塞电气化区段更换钢轨或夹板时有何规定？