【简答题】半锥角为α的圆锥形封头,在半径为R处的第一、第二主曲率半径分别为A. ∞、RB. R、∞C. R、R/cosαD. ∞、R/cosα
【单选题】When the waiter ask the guest whether he or she make any orders, the waiter could ask:________
A.
Would you like some vegetables for your lunch?
B.
Are you ready to order now?
C.
Hope you enjoy your meal.
D.
You have order......Am I correct?
【判断题】在三打白骨精故事中,八戒故意扩大连坐的范围,用法律圈套驱逐了悟空。
【单选题】When the waiter or ____ gives you the menu, you have to make some decisions.
【单选题】半锥角为 α的圆锥形封头,在半径为 R 处的第一、第二主曲率半径分别为