能平肝息风,又能通络的药物是()
A.蜈蚣
B.地龙
C.天麻
D.全蝎
E.白花蛇
参考答案:B, C
Last year, Li Hua, a college student, _____ to work for the Olympic Games. [ ]
A. is chossing
B. is chosen
C. was choosing
D. was chosen
有证标准物质的特性量值的有效性()。
A.与标准物质的放置时间和取样量都有关
B.与标准物质的放置时间和取样量都无关
C.与标准物质的放置时间有关,与取样量都无关
D.与标准物质的放置时间无关,与取样量都有关