求教几个问题

wangfuxuan · 发表于 2011-3-29 22:04:34

问题来自GWD30的那套数学题
Q9:
Is the measure of one of the interior angles of quadrilateral ABCD equal to 60 degrees? 正确答案是C
(1)   Two of the interior angles of ABCD are right angles.
(2)   The degree measure of angle ABC is twice the degree measure of angle BCD.
Q22: D是立方体画的有点像正立方体
What is the volume of the cube above? 正确答案 D
(1)   The surface area of the cube is 600 square inches.
(2)   The length of diagonal AB is 10√3 inches.
Q25:
For a certain race, 3 teams were allowed to enter 3 members each. A team earned 6 – n points whenever one of its members finished in nth place, where 1 ≤ n ≤ 5. There were no ties, disqualifications, or withdrawals. If no team earned more than 6 points, what is the least possible score a team could have earned? 正确答案D

A.   0
B.   1
C.   2
D.   3
E.   4

请问大侠们三个问题咋求解啊第一题我选E 第二题也是E 最后一题题目都没看懂

wangfuxuan · 发表于 2011-3-30 17:04:55

有高手回答一下不急。。。

wz62986667 · 发表于 2011-3-30 17:53:24

Q9.(1)两直角没法推
（2）说角ABC是角BCD两倍另外两角不知没法
合一块我不知道角ABC是不是那两直角如果是则另外两一45 一135 不是的话其他两角一120 一60 所以感觉E比较合适
Q22.哥们 cube就是立方体的意思立方体就正方体知道这个了你应该就会了
Q25.说一队派三人出赛得到的分数为6-n 那一个队的分数就是18-n1-n2-n3<=6 15>=n1+n2+n3>=12 求18-n1-n2-n3的最小值于是n1+n2+n3=15时有最小值3（这题有些混乱...）

wangfuxuan · 发表于 2011-3-31 15:48:24

谢谢楼上哈。。新问题 GWD29滴
Q13:
For any positive integer x, the 2-height of x is defined to be the greatest nonnegative integer n such that 2n is a factor of x. If k and m are positive integers, is the 2-height of k greater than the 2-height of m ? 正确答案B
(1) k > m
(2) K/M is an even integer.

wangfuxuan · 发表于 2011-3-31 15:49:13

顺便问一下我4.17考试现在做GWD合适不还是直接做JJ ? GWD跟天山有啥区别？？

wangfuxuan · 发表于 2011-3-31 21:42:14

有高手在不？、

DarthWalker · 发表于 2011-3-31 21:53:12

2-height of x是神马东西？

求教几个问题

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