Which one of two crossing power-driven ves

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问题单项选择题

Which one of two crossing power-driven vessels has the right of way in a fog?（）.

A.Both vessels

B.Neither vessel

C.The stand-on vessel

D.The giving-way vessel

答案

参考答案：B

选择题

27. Nearly four hundred supermarkets in Beijing are preparing to dim their lights ________ the "Earth Hour 2010" on Saturday night.

A．honor

B．honoring

C．to honor

D．having honored

问答题简答题

简述课堂纪律的类型。