研究药物量效关系时,首先要确定药理效应的性质,以便定量描述。药理效应按性质可分为 和。
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能使药酶活性增强或合成增加的药物称为药酶诱导剂。
A. 对
B. 错
LD50 /ED50 称为治疗指数,此值越小药物越安全。
A. 对
B. 错
The original version called SEQUEL was designed by anresearch center in 1974 and 1975.
A. IBM
B. ISO
C. Intel
D. ANSI
SQL's commands make it easy for you to design and manage the informaton in your database.
A. long
B. short
C. simple
D. complicated