【简答题】【消耗次数：1】
Translate the following sentence into Chinese.These senior scientists have committed to the rapid development of the Air Force of China all their lives.
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With the rapid development of the economy, all （ ） of our life have changed.
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filed
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随机题目
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关于药物在体内转化的叙述正确的是（）。
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A.生物转化是药物消除的主要方式之一
②
B.主要的氧化酶是细胞色素p450酶
③
C.p450酶对底物具有高度的选择性
④
D.有些药物可抑制肝药酶的活性
【多选题】
关于t1/2的叙述哪项是正确的（）。
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A.是临床制定给药方案的主要依据
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B.指血浆药物浓度下降一半的量
③
C.指血浆药物浓度下降一半的时间
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D.按一级动力学消除的药物.t1/2=0.693/k
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下列有关药物依赖性的叙述，正确的是（）。
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A.精神依赖性又称心理依赖性
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B.分为躯体依赖性和精神依赖性
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C.绝大多数具有依赖性的药物同时兼有精神依赖性和躯体依赖性
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D.躯体依赖性又称心理依赖性
【单选题】
半数致死量（LD50）是指（）。
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A.引起50%实验动物死亡的剂量
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B.引起50%动物中毒的剂量
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C.引起50%动物产生阳性反应的剂量
④
D.和50%受体结合的剂量