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【单选题】
Which of the following statements is true regarding hoods/cabinets?A.
Laminar flow hoods, chemical fume hoods and biological safety cabinets (BSC) can be used interchangeably
B.
A laminar flow hood maintains inward airflow and may be used for work with infectious materials
C.
Chemical fume hoods are HEPA filtered
D.
Biological safety cabinets use HEPA filters and directional airflow to protect both the worker and materials being used
E.
All of the above
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【单选题】患者,男性,25 岁。因激烈运动出现咳嗽,咳痰伴喘息 2h 入院。查体:喘息貌,口唇发绀在胸部闻及广泛哮鸣音。医生诊断为支气管哮喘控制上述症状的首选药物是()
A.
氨茶碱
B.
地塞米松
C.
色甘酸钠
D.
氯苯那敏
E.
沙丁胺醇
【单选题】Liberation from a dosage form refers to:
A.
Movement of the drug across the epithelial barriers it encounters and into the blood stream
B.
The application of a dosage form to an absorptive site
C.
Movement of the drug from interaction with elements of the dosage form to interaction with molecules of biological fluid
D.
Termination of drug activity
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