题目内容

4) is()

A. 0.5
B. 0.1
C. 0.01
D. 0.001

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The half life of a drug is 20 h. If it is orally administered just once, how long will it be eliminated at least?()

A. 10h
B. 20h
C. 40h
D. 100h
E. 50h

If the plasma half-life of a drug is 7 hours, then for multi-dose, when steady state concentration() of the drug in plasma is reached? ()

A. after 7 hours
B. After 14 hours
C. after 21 hours
D. after 35 hours
E. after 4 hours

Long term use of glucocorticoids can cause()

A. Hypotension
B. Hypoglycemia
C. Hypocalcemia
D. Hypercalcemia
E. Reduce phosphorus excretion

Which of the following drugs should be used for chronic asthma()

A. Terbutaline
B. Ephedrine
Cromolyn sodium
D. Formoterol
E. Beclomethasone dipropionate