[ 单选题 ]
常识
中
一级反应中药物的半衰期公式为 )
A、
t1/2 = 0. 693/k
B、
t1/2 = C0/2k
C、
t1/2 =0. 1054/k
D、
t1/2 = 1/C0k
E、
t1/2 =0. 693 k
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