皮皮学，免费搜题
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【多选题】
某企业拟进行一项风险投资,有甲乙两个方案可供选择。有关数据如下表: 甲方案 乙方案 期望值 6% 9% 方差 0.0625 0.0576 下列结论中说法不正确的有( )。A.
通过比较期望值可以判断方案的风险大小
B.
可以直接通过方差判断方案的风险大小
C.
甲方案的风险大于乙方案
D.
甲方案的风险小于乙方案
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皮皮学刷刷变学霸
举一反三
【单选题】Part 2 task2 Conversation1, question5:
A.
He may use that mechanic
B.
He may try repairing himself
C.
He will call the woman
D.
He will ask his neighbor for help
【简答题】如何判断空间点及直线是否属于一平面?
【单选题】Part 2 task2 Conversation1, question4:
A.
He only works on new cars
B.
He has fixed her car before
C.
He will probably overcharge her
D.
He is one of her neighbors
【简答题】如何判断空间点是否属于一直线?
【单选题】Part 2 task2 Conversation2, question4:
A.
It was too boring for anyone to play
B.
It would be useful in teaching the fifth graders about the balance of nature
C.
It would be too difficult for the fifith graders to play
D.
It was a very interesting game
【单选题】Part2 task2 Conversation1, question2:
A.
The machanic overcharged her
B.
She's trying to sell it
C.
She bought it from the neighbor
D.
It has broken down before
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