【单选题】【消耗次数：1】
下列各项属于斜眼掏槽是( )
①
直线掏槽
②
锥形掏槽
③
角柱掏槽
④
螺旋掏槽
参考答案：
复制
纠错
相关题目
随机题目
【简答题】
设 p: 2+3=5. q: 大熊猫产在中国. r: 复旦大学在广州. 则复合命题公式“(r? (pùq)) ? ?p”的真值为:[填空1]
【简答题】
Translate the following sentence into English.相对于在百货商店购物我更喜欢在网上购物，因为它更加方便和省时。
【简答题】
Translate the following sentence into English.你讲什么内容并不重要，重要的是你必须要演讲。
【简答题】
Direction: Fill in the blanks with the words given below. Change the form if necessary.[vain; frame; curve; twist; comb; collapse; scatter; scratch; rebuild; harsh]5. The horses liked this grooming, and I think, if they could talk, they would tell you where to[填空1]or comb.
【简答题】
Direction: Fill in the blanks with the words given below. Change the form if necessary.[expand; abuse; knowledge; narrative; plantation; property; oppressive; extremely; rebel; abolitionist]6. If someone takes away your[填空1]in that country, you have no recourse.
【简答题】
Direction: Fill in the blanks with thephrases given below. Change the form if necessary.[ought to; look forward to; in wonder; give way to; look down; on the way to; reach out; put one’s arm around; trip over; cut into]1. My dear, do not[填空1]such gloomy thoughts. Let us hope for better things.
【简答题】
Direction: Fill in the blanks with the words given below. Change the form if necessary.[dodge; mean; tease; disability; regular; bonus; proclaim; universal]7. Hell be glad to be in[填空1]work again.
【简答题】
设函数f: R+?R, f(x)=x2-3x-5，试求其单满双射性质。
【简答题】
求集合 A={2, 3, 4}上的恒等关系、全域关系、小于等于关系和整除关系。
【简答题】
设函数f: N?N, f(x)=2x+1，试求其单满双射性质。