排烟窗手动开启机构或按钮应固定安装在距楼地面()之间,并便于操作、明显可见。
A.1~1.5
B.1.1~1.5
C.1.2~1.5
D.1.3~1.5
参考答案:D
"It looks like rain, _____ it?"
"Yes, it _____. And I forgot my umbrella."[ ]
A. isn't; is
B. doesn't; does
C. can't; can
简述资源管理策略的一般内容。