單項選擇題
A.5B.10C.15D.20
A.大于6.4B.≤10C.2.5~4.0D.>5.0
A.30B.25C.50D.60以上
A.2B.2.2C.6D.8
A.500B.50C.200D.100
A.微膨脹B.普通C.石膏和白礬D.鋁粉
A.L/1000B.2L/1000C.2D/1000D.D/1000
A.5B.10C.30D.20
A.不必要B.2C.0.5~1D.1.5
A.50B.200C.500D.100
A.不必要B.20%C.10%D.100%