当火灾荷载密度>50Kg/m2时,一支Ф19mm水枪控制的燃烧面积按50m2估算。()
参考答案:错
We lost our way in the street and the heavy rain________our helplessness. [ ]
A. added to
B. led to
C. turned out
D. made up
小气候是指()。
A.湿度、风速、气压和热辐射
B.气温、风速、气压和热辐射
C.气温、湿度、气压和热辐射
D.气温、湿度、风速和热辐射
E.气温、湿度、风速和气压