單項選擇題
A.20 B.40 C.50
A.7 B.10 C.9
A.2 B.5 C.6
A.一級負荷 B.二級負荷 C.三級負荷
A.1 B.2 C.1.5
A.2 B.3 C.3.5
A.2 B.3 C.2.5
A.2 B.1.8 C.2.5
A.5 B.4 C.3
A.6 B.8 C.5
判斷題