一级动力学过程
参考答案:
解析:指单位时间内药量的消除的比例是恒定的,又称恒比消除,半衰期不变。
计算:(-2)3+(-3)×[(-4)2+2]-(-3)2÷(-2)
Is this the second time that you _________ the Summer Palace?[ ]
A. visit
B. are visiting
C. had visited
D. have visited