①在“探究恒力做功与动能改变的关系”实验中,某同学采用如图甲所示的装置进行实验,

题型:问答题

问题:

①在“探究恒力做功与动能改变的关系”实验中,某同学采用如图甲所示的装置进行实验,他想用钩码的重力表示小车受到的合外力,为了减小这种做法带来的实验误差,在器材的选用和调节上,除满足钩码的质量远远小于小车的质量外,还须满足的另一个要求是______.

②如图乙所示是某次实验中得到的一条纸带,其中A、B、C、D、E、F是依次选取的计数点,相邻计数点间的时间间隔为T、距离如图乙所示,则打下C点时小车的速度表达式为(用题中所给的物理量表示)______,

③要验证合外力的功与动能变化间的关系,除位移、速度外,还要测量的物理量有______.

考点:打点计时器实验:探究功与速度变化的关系
题型:问答题

As you have probably noticed, some students are more successful than others when taking such an examination. Often the more successful students are better prepared. However, sometimes students who do well have better strategic skills that make taking test easier, and therefore provide better results.

Here are some very important and often ignored guidelines to taking a test successfully.

Do not insist on completing each question before going to the next. This is extremely important. If you spend a lot of time on one question that you don’t understand there can be two negative outcomes:

Losing time. Remember one question may only be worth one point, if you are not able to answer questions later because you have lost time you could lose more points!

Becoming nervous. Becoming nervous can make you lose your concentration and leads to worse results.

If possible, go through the entire test answering the questions you are sure you know. This results in your being more relaxed and feeling more confident.

Go through the test a second time working out the answers to more difficult questions. Now you will feel more confident and this will improve your test taking. However, remember not to waste too much time on any one question.

Once you have gone through the test twice, see if any of the questions asked can help you answer those really difficult questions. This is a little used trick. Sometimes questions asked are answered in later questions asking for different things. This should not be tried until you have finished the test and have some time remaining to try the questions you have had problems with again.

If you have a strong feeling about a question when you first answer it, don’t go back and change later. Usually(but not always) a strong first impulse(冲动)means we know the answer and we don’t really have to think about it too much. Going back to think about it usually makes you unsure and often causes an error. This is very common so be very careful!

小题1: What is the main idea of the passage? ( within 10 words)

                                                                             

小题2:What is the author‘s attitude towards insisting on completing each question before going to the next? (within 2 words)

                                                                              

小题3:What is the purpose of answering the questions we are sure we know first? (within 10 words)

                                                                              

小题4: When should we solve the more difficult questions? (within 10 words)

                                                                              

小题5: What may happen when we go back to think about a question we first answer? (within 10 words)

                                                                              

题型:问答题

计算题。
某企业12月份各损益类账户结账前的余额如下表所示:
单位:元

账户名称 账户余额 账户名称 账户余额
 主营业务收入

 主营业务成本

 主营业务税金及

 附加

 投资收益

 其他业务收入

375400(贷)

153700(借)

43000(贷)

51000(贷)

5600(贷)

 其他业务支出

 营业费用

 财务费用

 管理费用

 营业外收入

 营业外支出

 所得税

3400(借)

52000(借)

30400(借)

42400(借)

12000(贷)

41800(借)

25509(借)

要求:(1)结转各损益类账户的余额。
(2)计算如下几个指标:①主营业务利润;②营业利润;③利润总额;④净利润。

题型:问答题

我国精神疾病诊断分类【CCMD-3】主要类别有()。

A.7大类

B.8大类

C.9大类

D.10大类

E.11大类

题型:问答题

华宇公司于2008年4月1日从证券市场购入A公司股票60 000股,划分为交易性金融资产,每股买价7元(其中包括已宣告发放尚未领取的现金股利1元),另外支付印花税及佣金8 000元。2008年年底,华宇公司持有的该股票的市价总额(公允价值)为400 000元。2009年3月 12日,华宇公司出售这项金融资产,收入现金 450000元。华宇公司出售该项金融资产时应确认的投资收益为( )元。

A.30000
B.60 000
C.85 000
D.90000

题型:问答题

在进行商品房开发或者其他非公益设施建设的时候,由地方政府出面或者开发商自己直接出面取得建设用地使用权,由开发商或者政府跟特定土地上原来的建设用地使用权人订立拆迁安置补偿协议,然后进行拆迁。这属于哪一种拆迁?()

A、协议拆迁

B、自行拆迁

C、暴力拆迁

D、征收拆迁

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