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【简答题】
已知函数f(x)= x 3 - x 2 +x+b,其中a,b∈R. (1)若曲线y=f(x)在点P(2,f(2))处的切线方程为y=5x-4,求函数f(x)的解析式. (2)当a>0时,讨论函数f(x)的单调性.
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【简答题】Section A Questions 1 and 2 are based on the news report you have just heard. 1. A) The self-driving system was faulty. B) The car was moving at a fast speed. C) The man in the car was absent-minded. ...
【单选题】why did the man text message all his friends when he first got his cellphone?
A.
He thought it was cool.
B.
He needed the practice.
C.
He wanted to stay connected with them.
D.
He had an urgent message to send.
【简答题】调查一家货运企业，了解其运输状况
【单选题】治疗无排卵性DUB，以下哪种说法不正确
A.
雌、孕激素序贯法适用于青春期DUB
B.
雌、孕激素合并应用适用于育龄期有避孕要求的患者及更年期DUB
C.
雄激素有拮抗雌激素的作用，单独应用效果良好
D.
促排卵治疗适用于青春期和育龄期DUB
E.
口服避孕药可限制子宫内膜生长，使过度增生的内膜逐渐迟化，可有效控制月经周期
【单选题】Why did the man text message all his friends when he first got his cell phone?
A.
He thought it was cool.
B.
He needed the practice
C.
He wanted to stay connected with them.
D.
He had an urgent message to send.
【简答题】A ) The self-driving system was faulty. B ) The car was moving at a fast speed. C) The man in the car was absent-minded. D) The test driver made a wrong judgment. 2. A ) They have generally done quite...
【简答题】Questions 1 and 2 are based on the news report you have just heard. 1. A) The man in the car was absent-minded. B) The test driver made a wrong judgement. C) The self-driving system was faulty. D) The...
【简答题】据对话内容，在方框中选择正确的答案补全对话。（每小题2分，共10分） A.Could I take a message? B. Please give me your phone number. C What’s wrong with you? D He isn’t here right now. E.Wait a minute, please. F. Can I leave ...
【单选题】以下哪项符合休克代偿期临床表现的特点
A.
血压下降，脉压显著缩小，心率加快，尿量减少
B.
血压下降，脉压轻度缩小，心率加快，尿量减少
C.
血压正常的，脉压无变化，心率加快，尿量正常
D.
血压轻度降低，脉压无变化，心率加快，尿量减少
E.
血压正常或稍升高，脉压缩小，心率加快，尿量正常或减少
【简答题】section B Questions 8 to 11 are based on the conversation you have just heard. 8. A)He's got addicted to technology. B)He is not very good at socializing. C)He is crazy about text-messaging. D)He does...
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