A.2%
B.3%
C.5%
D.8%
A.2%
B.3%
C.5%
D.8%
A.40%;70%
B.50%;80%
C.60%;90%
D.70%;90%
A.20
B.30
C.60
D.45
A.7天
B.10天
C.14天
D.21天
A.40%
B.50%
C.60%
D.70%
A.5天
B.10天
C.14天
D.21天
A.14天
B.21天
C.28天
D.35天
A.20
B.30
C.60
D.45
A.7天
B.10天
C.14天
D.28天