A.產(chǎn)力性難產(chǎn)B.產(chǎn)道性難產(chǎn)C.胎兒性難產(chǎn)D.營(yíng)養(yǎng)不良性難產(chǎn)
A.奶牛B.犬C.貓D.兔
A.產(chǎn)力性難產(chǎn)B.產(chǎn)道性難產(chǎn)C.胎兒性難產(chǎn)D.應(yīng)激性難產(chǎn)