A.b=300mm,h=150mm B.b=320mm,h=140mm C.b=280mm,h=130mm D.b=290mm,h=160mm
A.1/4 B.1/6 C.1/10 D.1/15
A.自承重墻 B.玻璃幕墻 C.填充墻 D.隔墻