“ We can’t go out in such bad weather,” said Susan, ___ out of the window.

A．looked

B．to look

C．having looked

D．looking

灭火器按充装灭火剂类型分为水型、泡沫型、干粉型、（）和C0₂灭火器。

A、卤代烷

B、清水型

C、1211型

D、干冰型