14.標示為5 ppm的藥品濃度與下列何者相當?
(A)0.00005%
(B)0.0005%
(C)0.005%
(D)0.05%
答案:登入後查看
統計: A(20), B(210), C(13), D(4), E(0) #3490482
統計: A(20), B(210), C(13), D(4), E(0) #3490482
詳解 (共 7 筆)
#7288398

2
0
#6563460
PPM=10-6
(C)0.005%=5x10-4x10-2=5x10-6=5PPM
1
0