扑救地下商场火灾时，利用水泵接合器向内部管网供水时，要查清水泵接合器的使用范围及固定消防水泵压力。()
参考答案：对
Which notice says "You can eat here in the morning."[ ]
A. No running in school hall
B. Breakfast Served 7:00 a. m. -10:00 a. m
C. FOUND Student' s bag
D. DANGER DO NOT GO INTO THE WATER
一个半圆的直径是8分米，它的周长是多少？面积是多少？
