【单选题】---Who can tell me_______? ---Every 15 minutes.
A.
when the bus will arrive.
B.
how often the bus arrives
C.
how long has the bus been away
D.
when will the bus arrive
【单选题】长度为多少米的船舶,其舷灯可以合并成一盏,装设于船的首尾中心线上()。
【判断题】同瓶颈采购品项一样,关键型采购品项也给企业带来了高风险。
【单选题】_____________ do Jenny and Danny arrive? [ ]