The          why he is absent today is          he has got a bad headache.  

A．reason; that

B．reason; because

C．cause; that

D．cause; because

铺贴高聚物改性沥青卷材采用热熔法或冷粘法施工时，应符合( )规定。

A．厚度小于2mm的高聚物改性沥青卷材，严禁采用热熔法施工

B．两幅卷材短边和长边的搭接宽度均不应小于90mm

C．在立面与平面的转角处，卷材的接缝应留在平面上，距立面不应小于500mm

D．铺贴时应展平压实，卷材与基面和各层卷材间必须黏结紧密