—I want to know ________ next week，Mum.

—If I know about it, I will tell you at once.

A．when my uncle comes

B．when will my uncle leave

C．where my uncle will stay

D．where does my uncle stay

气垫船在非排水状态下航行中应显示的号灯为：（）.

A.一盏黄色环照闪光灯

B.桅灯、舷灯及尾灯，一盏黄色环照闪光灯

C.舷灯及桅灯，一盏黄色环照闪光灯

D.桅灯、舷灯及尾灯，一盏黄色环照闪光灯，不对水移动时关闭舷灯及尾灯