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单项选择题
催产剂进行胸腔注射时,针头刺入方向应与体轴成
A.15~30°
B.30~45°
C.45~60°
D.60~75°
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一般鱼类对水族箱的暂养水温要求控制在
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Jennifer islwysbsent from school,__I suppose is why she is blmed nownd then.whichB.whoC.thJennifer islwysbsent from school,__I suppose is why she is blmed nownd then.which B.who C.tht D.wht
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Ittribute her success in science ______ the encourgement she received from her prents.Ittribute her success in science ______ the encourgement she received from her prents.on B.to C.with D.into
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