A.there is a risk of collision B.you are the give-way vessel C.the other vessel is the give-way vessel D.there is no risk of collision
A.多囊卵巢綜合征B.多產(chǎn)C.糖尿病D.卵巢和乳腺癌
A.異常子宮出血B.IUD及宮內(nèi)異物定位,試取C.宮腔黏連D.以上均是