某药按一级动力学消除,其血浆半衰期等于(Ke为消除速率常数):
A.0.693/KeB.Ke/2.303C.2.303/KeD.Ke/0.303E.Ke/0.693
参考答案:A
Active transport:
The little chick ________ the earthworm, deciding whether to swallow it or let it go. [ ]
A. glimpsed at
B. looked into
C. stared at
D. glared at