单选题By how much does the sum of the roots of the equation (x+1) (x-3) = 0 exceed the product of its roots?A 1B 2C 3D 4E 5

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单选题

By how much does the sum of the roots of the equation (x+1) (x-3) = 0 exceed the product of its roots?

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1.类目有()个级别。A、1B、2C、3D、4E、5

2.文字材料厚度不超过()厘米。A、1B、2C、3D、4E、5

3.医疗器械分为几类A:1B:2C:3D:4E:5

4.How many positive roots does the equation (x+1/2)2012-x2012+2x+1/2=0 have? ____.

更多“单选题By how much does the sum of the roots of the equation (x+1) (x-3) = 0 exceed the product of its roots?A 1B 2C 3D 4E 5”相关问题

第1题：

仲裁庭的组成人数为()。

A:1
B:2
C:3
D:4
E:5

答案：A,C
解析：
审理案件的仲裁庭一般由3人组成，在独任仲裁的情况下由1人组成。
第2题：

How many token buckets are needed to support a multi-actions policer that meters conforming， exceedingand violating traffic？（）
- A、1
- B、2
- C、3
- D、4
- E、5
- F、6
正确答案:B
第3题：

处方应在几日内有效（）
- A、1
- B、2
- C、3
- D、4
- E、5
正确答案:A
第4题：

How many simultaneous Telnet sessions does a Cisco router support by default?（）
- A、1
- B、2
- C、3
- D、4
- E、5
- F、6
正确答案:E
第5题：

单选题
Which of the following is the best version of sentence 2 (reproduced below)?His aspiration, to discover where we get our gender identity to see how women are treated for himself.
A
(As it is now)
B
His aspiration was to discover where we get our gender identity from, to see for ourselves how women are treated in our society.
C
His aspiration, to discover the roots of gender identity, and to see how women are treated for himself.
D
His aspiration was to discover the roots of gender identity and experience firsthand the way women are treated.
E
His aspiration was to discover the roots of gender identity and to personally experience the treatment of women by men.

正确答案： D
解析：
A和C项不是个完整的句子。E项错用了被动结构。只有D项没有错误。
第6题：

单选题
Why does land become desert after all trees are cut down?
A
Because nothing remains on land except floods.
B
Because there are no longer trees to keep the rain and protect the top-soil.
C
Because too much rain sinks in and washes away the top-soil.
D
Because roots of the trees break up the soil.

正确答案： B
解析：
推理题。第三段最后一句指出“When all the top-soil is gone, nothing remains but worthless desert.”表层土壤流失导致了沙漠化，而树木是可以防止水土流失的。
第7题：

The phobia may have its roots in a childhood 【trauma】.

　A. Fear B. joy C. hurt D. memory

答案：C
解析：
第8题：

甲状旁腺有（）个
- A、1
- B、2
- C、3
- D、4
- E、5
正确答案:D
第9题：

装载在托盘上货物，其搬运活性指数为（）
- A、1
- B、2
- C、3
- D、4
- E、0
正确答案:B
第10题：

单选题
金银花的非腺毛有（）种
A
1
B
2
C
3
D
4
E
5

正确答案： C
解析：暂无解析
第11题：

单选题
A
图1
B
图2
C
图3
D
图4
E
图5

正确答案： B
解析：

单选题By how much does the sum of the roots of the equation (x+1) (x-3) = 0 exceed the product of its roots?A 1B 2C 3D 4E 5

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