棉子糖
参考答案：
存在于甜菜中，用史蒂芬法回收甜菜废蜜中糖分时它成副产物产出，用蜜二糖酶可将它水解成蔗糖和半乳糖。
原地基原状土的强度不符合要求时，应进行换填，换填深度应不小于（），并予以分层压实到规定要求。
A.10cm
B.20cm
C.30cm
D.40cm
How should the lifeboat sea painter be rigged?（）
A.Spliced into the ring on the stem post
B.Secured to the inboard side of a forward thwart and led inboard of the falls
C.Secured by a toggle to the stem post and led outboard of the falls
D.Secured by a toggle around the outboard side of a forward thwart
