无窗间墙和窗槛墙的幕墙,应在每层楼板外沿设置耐火极限不低于1.00h、高度不低于()m的不燃烧实体裙墙。
A.0.2
B.0.4
C.0.6
D.0.8
参考答案:D
—When is your birthday?
—It is _________. [ ]
A. April nine
B. April's ninth
C. April nineth
D. April 1st
设函数f(x),g(x)满足f’(x)=g(x),g’(x)=2ex-f(x).且f(0)=0,g(0)=2.求