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【单选题】
下列注射进针的角度错误的是A.
注射针头与皮肤成5°角
B.
皮下注射针头与皮肤成30°~40°角
C.
肌内注射针头与皮肤成50°~60°角
D.
静脉注射针头与皮肤成20°~25°角
E.
动脉注射针头与动脉走向成40°角
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