同一线路轨道必须使用（）型号钢轨。
A.不同
B.同一
C.多种
参考答案：B
— Excuse me, could you tell me _____?
— Sorry, I'm new here, too.[ ]
A. where is the nearest bank
B. how can I get to the bank
C. there is a bank near here
D. which way is to the bank
为了提高软件开发效率，开发软件时应尽量采用( )。
A．汇编语言B．机器语言C．指令系统D．高级语言
