某药抗一级速率过程消除,消除速率常数 K=0.095h-1,该药的半衰期是()
A.8.0h
B.7.3h
C.5.5h
D.4.0h
E.3.7h
参考答案:B
He made a mistake, but then he corrected the situation _____ it got worse. [ ]
A. until
B. when
C. before
D. as
引起锅炉安全阀误动作的原因是什么?