在海上遇险和救助中,搜寻基点可由()确定。
Ⅰ.岸上当局
Ⅱ.海面搜寻协调船
Ⅲ.救助船的推算
A.Ⅰ~Ⅲ
B.Ⅰ、Ⅱ
C.Ⅱ、Ⅲ
D.Ⅰ、Ⅲ
参考答案:A
(2013·正定中学二次月考)Some passersby witnessed the car accident ________ five passengers were killed,a baby included.
A.in which
B.which
C.that
D.in that
木工机械应安装()开关。
A、按扭
B、搬把
C、闸刀
D、负荷开关