轻危险级、中危险级场所中公称直径32mm的配水支管控制的标准喷头数不应超过()只。
A、3
B、4
C、5
D、6
参考答案：A
Parents ________ much importance to education. They will do their best to give their children that
priceless gift..[ ]
A. attach
B. pay
C. link
D. apply
论述原始舞蹈的艺术特征。
