A．一定上升
B．一定下降
C．一定静止
D．条件不足，无法判断
答案：D
—The rescue team are considering ______they can do more for the people suffering from the snow storm.
—So they are.
A．what
B．whatever
C．if
D．how
在机组启动加负荷过程中，当负荷加到30MW时，会产生负荷突然快速增加，原因是（）。
