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D.头静脉
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单项选择题
A.用犬夹夹住颈部,使犬头向上,再套上犬链
B.用犬夹夹住头部,使犬头向上,再套上犬链
C.用犬夹夹住颈部,使犬头向下,再套上犬链
D.用犬夹夹住头部,使犬头向下,再套上犬链
E.用犬夹夹住颌部,使犬头向下,再套上犬链
单项选择题
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