健康人血液pH为()
A. 1~2
B. 7.25~7.35
C. 7.35~7.45
D. 7.45~7.55
E. >10
工序能力较为理想的是()。
A. Cp=1.33
B. Cp>1
Cp=0.67
D. Cp<1
肺部给药时粒子,可到达支气管与细支气管()。
A. <2μm
B. 2~3μm
C. 2~10μm
D. >10μm
E. <10μm
_____we understand things has a lot to do with what we feel.
A. Where
B. How
C. Why
D. When