Which one is correct about system transfer function（）
A. Independent of the input signal and related to the system structure and parameters
B. It is related to input signal and system structure and parameters
C. Related to input signal, independent of system structure and parameters
D. It has nothing to do with system structure and is related to system parameters
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Which of the following diseases could be treated by the “Glenin” in the movie “Dying to survive”（）
A. Heart disease
B. Leukemia
Cerebrovascular disease
D. Cirrhosis
Which of the following are endogenous ligands of receptors（）
A. Neurotransmitter
B. hormone
C. Autoactive substance
D. Mycoplasma
What are the main problems of CADD at present（）
Authenticity and usability of three-dimensional protein structure
B. The way of receptor ligand interaction
C. Whether the designed molecule can be chemically synthesized
Drug transport, metabolism and side effects in vivo
The minimum wage（）
A. is usually about 75 percent of the average wage earned in manufacturing
B. raises the wages of highly skilled workers
C. encourages master workers to take on apprentices
D. has its greatest impact on teenage unemployment
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