在线路上用白铅油作钢轨轻伤有发展的连续伤损标记应该为()符号。
A、↑△△
B、│←△△→│
C、│←△→│
参考答案:B
8088外部数据总线的位数是( )。
A.8条
B.16条
C.32条
D.20条
Since the shipment consists of seasonable goods, it is important that it is______as soon as possible.
A.deleted
B.demanded
C.delivered
D.detached