模数60m的数值是(),经常用于()。
A.60mm,构件截面或缝隙
B.600mm,门窗洞口
C.6000mm,柱距或开间
D.60000mm,建筑总尺寸
参考答案:C
下列物质属于纯净物的是( )
A.陶瓷
B.玻璃
C.二氧化硅
D.水泥
There is little chance ____ the basketball player will recover from his injury in time for the next game.
A.whether
B.that
C.which
D.how