咯血窒息的首要护理措施是(  )。

咯血窒息的首要护理措施是(  )。A.吸氧 B.止血 C.心理护理,精神安慰 D.保持呼吸道通畅 E.采取患侧卧位

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正常人血浆中NaHC03/H3CO3之比是(  )。

正常人血浆中NaHC03/H3CO3之比是(  )。A.15:1 B.25:1 C.20:1 D.10:1 E.30:1

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The river widens considerably as it begins to turn west.

The river widens considerably as it begins to turn west.A.twists B.stretches C.b

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利福平的正确口服方法是(  )。

利福平的正确口服方法是(  )。A.三餐前 B.三餐后 C.三餐后及临睡前 D.早晨空腹顿服 E.临睡前

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The workers in that factory manufacture furniture.

The workers in that factory manufacture furniture.A.promote B.paint C.produce D.

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