用适当的方法解下列方程.①x2-6x=1②2x2+22x+1=0③2x(x-1)

题型:解答题

问题:

用适当的方法解下列方程.
①x2-6x=1
②2x2+2
2
x+1=0
③2x(x-1)=x-1
④(x-2)2=(2x+3)2
⑤-3x2+22x-24=0
⑥(3x+5)2-4(3x+5)+3=0.
考点:一元二次方程的解法
题型:解答题

组织财政收入的原则主要应当包括()。

A.从发展经济入手,增加财政收入的原则

B.从节约的角度出发,逐步减少财政收入

C.利益兼顾的原则

D.合理负担的原则

E.公平与效率兼顾的原则

题型:解答题

商户错把消费交易办理成预授权交易,发现时持卡人已经离开现场,应优先选择使用以下那个交易。()

A.预授权完成

B.手工预授权完成

C.请款

D.例外协商

题型:解答题

当前,很多采用的需求定义方法是一种什么或者称为预先定义的方法

A.严格的

B.顺序的

C.求精的

D.抽象的

题型:解答题

What’s your earliest childhood memory Can you remember learning to walk Or talk The first time you heard thunder or watched a television program Adults seldom (1) events much earlier than the year or so before entering school, (2) children younger than three or four (3) retain any specific, personal experiences.

A variety of explanations have been (4) by psychologists for this "childhood amnesia". One argues that the hippo-campus; the region of the brain which is (5) for forming memories, does not mature until about the age of two. But the most popular theory (6) that, since adults don’t think like children, they cannot (7) childhood memories. Adults think in words, and their life memories are like stories or (8) one event follows (9) as in a novel or film. But when they search through their mental (10) for early childhood memories to add to this verbal life story, they don’t find any that fit the (11) . It’s like trying to find a Chinese word in an English dictionary.

Now psychologist Annette Simms of the New York State University offers a new (12) for childhood amnesia. She argues that there simply aren’t any early childhood memories to (13) . According to Dr. Simms, children need to learn to use someone else’s spoken description of their personal (14) in order to turn their own short-term, quickly forgotten (15) of them into long-term memories. In other (16) , children have to talk about their experiences and hear others talk about (17) --Mother talking about the afternoon (18) looking for seashells at the beach or Dad asking them about their day at Ocean Park. Without this (19) reinforcement, says Dr. Simms, children cannot form (20) memories of their personal experiences.

Notes: childhood amnesia 儿童失忆症。

14()

A.instincts

B.feelings

C.sensations

D.experiences

题型:解答题

在轴向拉伸或压缩杆件横截面上不在此列应力是均布的,而在斜截面上()

A、仅正应力是均布的

B、正应力,剪应力都是均布的

C、仅剪应力是均布的

D、正应力,剪应力不是均布的

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