下列分项工程不属于木结构子分部的是（）。
A、方木与原木结构
B、胶合木结构
C、木门窗制作与安装
D、木构件防护
参考答案：C
气体灭火系统的操作和控制要求。
-Where have you been?
-I got caught in traffic；otherwise________sooner.[ ]
A．I would be here
B．I have been here
C．I had been here
D．I would have been here
