【单选题】按分子结构分,以下不属于_____________碳水化合物的分类的是。
【简答题】Have you tried to ________ the money for the operation? Maybe people online will be willing to give you some money.
【单选题】有一调心滚子轴承数据如下: C r=45.3kN , C 0=39.9kN ,径向载荷 F r=45000N, 转速 n =10r/min ,要求工作寿命 1500h , f d =1 , [ S 0] = 1 ,经计算表明该轴承 ___________ 。
【简答题】也许在100年后人们将活到200岁。 Maybe people will ____ to be 200 years old ____ 100 years.
【简答题】Maybe people __________ a cure for cancer in the nearfuture.A. find B. found C. would found D. will find