自动空气开关的作用是什么？
参考答案：
能通断正常的负荷电流，当电路发生短路、过载或电压严重降低时能自动切断电源。
农村五保供养分( )两种形式。
A．村级供养与乡级供养B．机构供养与委托供养C．家庭供养与公共供养D．集中供养与分散供养
My vessel will be able to take another 200 metric tons of cargo（）the previous figure of my declaration.
A.in addition to
B.in connection with
C.in accordance with
D.in relation to
