金绿宝石猫眼的透明度为()
A.透明
B.半透明
C.不透明
参考答案:B
Ryan’s family____ very large and his family____all fond of going hiking.
A.is; are
B.are; is
C.is; is
D.are; are
关于木基层混色油漆施工,下列说法不正确的是( )。
A.施工环境应通风良好
B.大面积施工前,应事先做样板间
C.施工前,应对木门窗等木材外形进行检查
D.应在玻璃未安装前刷末道油漆