应急演练的类型有（）。
参考答案：桌面演练、功能演练、全面演练
A．乙醇
B．丙酮
C．乙酸甲酯
D．乙酸乙酯
Joining the firm as a clerk, he got rapid promotion, and _______ as a manager.
A．ended up
B．dropped out
C．care back
D．started off
