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【简答题】
纪念品店加工一种艺术节比赛奖杯(如图)。加工时,一个有机玻璃圆柱正好可以截成两个这样的奖杯。求一个奖杯的体积。
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皮皮学刷刷变学霸
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【简答题】Fill in the blanks with the following phrases: 1.surrounded by 2.excel 3.be similar to 4.delicate 5.display 1. Five-Fingers Peak its name as it looks like five extendedfingers. 2. green hi...
【单选题】阅读第3篇: Plants are very important living things. Life could not go on if there were no plants. This is because plants can make food from air , water and sunlight. Animals and man cannot make food from ...
A.
plants are important for life
B.
plants cannot grow without air
C.
there are many plants in the world
D.
we can not live without water
【简答题】根据句意和首字母提示完成下列句子。 1. There are two c in her family. One is a boy,the other is a girl. 2. If you study h , you will get good grades(成绩). 3. People often go swimming in s . 4. Mr. Black is a reporter. H...
【单选题】菌痢的发病机制,下列哪一项不正确( )
A.
致病力强的细菌侵入人体才引起发病
B.
细菌致病力取决于其对肠黏膜上皮细胞的吸附和侵袭力
C.
机体免疫力低下易使侵入细菌大量繁殖
D.
细菌容易侵入血流而发生菌血症或败血症
E.
细菌引起肠黏膜病变而出现腹痛、腹泻和脓血便等症状
【单选题】If there are two or more different substituents when listing them in alphabetical order, we can not ignore ____
A.
the prefixes sec- and tert-
B.
the prefixes iso- and neo-
C.
multiplying prefixes di, tri, tetra.
D.
none of the above.
【单选题】单选和复选框按钮使用什么属性来决定其是否选中?而下拉列表和列表框使用什么属性了决定其是否选中?
A.
都是checked
B.
都是selected
C.
前者是checked,后者是selected
D.
后者是checked,前者是selected
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