经断前后诸证的常见症状是（） A.烦躁易怒 B.头晕目眩 C.耳鸣心悸 D.烘热汗出

我国缺水最严重的地区是（　　）

A．东北和华北

B．西北和西南

C．西南和东南

D．华北和西北

For GMDSS，when may a compulsory vessel not be allowed to leave port?（）

A.When the vessel is in an overloaded condition

B.When the vessel has arranged for both duplication of equipment AND shore-based maintenance

C.When the vessel has replaced a required piece of GMDSS-related equipment but its performance has not been verified or logged

D.When the vessel is carrying only two licensed GMDSS Radio Operators and is capable of performing all required functions

某班级同学举行毕业会餐，每个人用一只饭碗，三个人合用一只菜碗，四人合用一只汤碗，会餐共用了57只碗，问：参加会餐的同学人数是多少人( )

A．19

B．24

C．36

D．57

以下逃费方式，（）不是利用缩短计费里程的方式逃缴通行费。

A.换卡

B.架桥

C.伪卡

D.J型行驶

哈士奇原产于（）。

A.阿拉斯加

B.东非

C.西伯利亚

D.阿尔卑斯山