A.10 B.100 C.1000 D.10000
A.鍍鋅鐵絲 B.鍍鋅鋼絲 C.鍍鋅銅絲 D.鍍鋅鉛絲
A.5% B.10% C.15% D.20%
A.1.5 B.3.0 C.4.0 D.5.0
A.1~2 B.2~4 C.3~5 D.4~6