A.2個 B.3個 C.4個 D.5個
A.高于 B.小于 C.等于
A.適當修正曲線 B.不變 C.試驗作廢 D.重新取坐標繪制曲線
A.5s~10s B.10s~15s C.15s~20s D.20s~25s
A.3% B.5% C.10% D.15%