中国铁路客户服务中心客户服务电话是()。
A.95533
B.12306
C.12305
D.10086
参考答案:B
— How often do you eat out?
— __________ , but usually once a week. [ ]
A. Have no idea
B. It depends
C. As usual
D. Generally speaking
矿石运搬方式选用电耙运搬方式时,受矿巷道可分为();();()三种形式