泡沫灭火剂可分为()。
A.干泡沫
B.湿泡沫
C.中等泡沫
D.高等泡沫
参考答案:A, B, C
Nobody would stand out admitting the fact, for some reason, ________ they lost the game.
A.that
B.which
C.what
D.why
踢脚线的高度一般为( )mm。
A.80~100 B.90~120C.100~120 D.100~150