【判断题】角接触轴承的接触角α越大,表示其能承受的轴向载荷就越大。
【判断题】角接触球轴承的接触角值越大,表示其承受轴向力的能力越大
【单选题】From paragraph 3 we know the author's room-mate_________.
B.
became his good friends.
【单选题】使用裂隙灯弥散投照法时投射与观察夹角可用的度数是
【判断题】角接触轴承的接触角 越大,表示其能承受的轴向载荷就越大。
【单选题】From paragraph 3 we know the author' s room-mate ( ).
B.
became his good friend
【单选题】From paragraph 3 we know the author's room-mate ________.
B.
became his good friend
【单选题】()是使用裂隙灯弥散投照法时投射与观察夹角可用的度数。
【简答题】夹竹桃科植物花冠喉部具有______,花冠裂片______排列,花药常呈______,种子常具______。