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【简答题】
已知函数 f(x)= 1 3 x 3 - 1 2 (a+2) x 2 +bx+1 ． （1）当b=2a时，求函数f（x）的极值？ （2）已知b＞0，且函数f（x）在区间（0，2]上单调递增，试用b表示出a的取值范围．
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举一反三
【单选题】下列不属于心理物理量表种类的是:
A.
顺序量表
B.
等距量表
C.
比例量表
D.
数值量表
查看完整题目与答案
【简答题】• The exporter checks carefully all the terms and conditions listed in the L/C. If all terms and conditions are acceptable, the exporter will make the shipment within the time specified in the L/C. If...
查看完整题目与答案
【单选题】心电图检查发现为急性心肌梗死入监护室,1h后发现患者心电图出现QRS—T波消失,出现大小不等,极不规则的曲线波,即刻采取的首要措施是
A.
患者,女性,70岁,冠心病心绞痛5年,平日心绞痛发作时含服硝酸甘油1~3min止痛,今日心绞痛发作3h服用上述药物无效,急送医院。心内注射利多卡因
B.
非同步直流电除颤
C.
高浓度吸氧
D.
气管插管
E.
同步直流电除颤
查看完整题目与答案
【单选题】There are two key reasons why employees want flexible work. One is that their work does not require being in the office all the time. The other is that
A.
people in the generations following the Baby Boomers have less commitment to work and a lower work ethic.
B.
many jobs no longer require face-to-face contact with co-workers or clients, so it makes little difference what location the employees work from or what time they are “at work.”
C.
employees are highly involved in community service and leisure pursuits.
D.
they have long commutes between home and their workplace.
查看完整题目与答案
【单选题】建筑施工安全生产许可证的有效期为（ ）年。
A.
1
B.
2
C.
3
D.
5
查看完整题目与答案
【单选题】In which of the following time frames do the demands require the GM to develop communication channels and to nurture relationships that extend beyond the specific domain of the hotel? ( )
A.
Short-run
B.
Medium-run
C.
Intermediate run
D.
Long-run
E.
Only a and b
查看完整题目与答案
【单选题】What is the main purpose of the conversation?
A.
To outline the duties the professor requires of his teaching assistant.
B.
To discuss how to best organize a teaching assistantship position.
C.
To debate the best way to supplement regular instructional time.
D.
To illustrate the importance of tutorials to student comprehension.
查看完整题目与答案
【单选题】心电图检查发现为急性心肌梗死入监护室,1h后发现患者心电图出现QRS—T波消失,出现大小不等,极不规则的曲线波,即刻采取的首要措施是
A.
心内注射利多卡因
B.
非同步直流电除颤
C.
高浓度吸氧
D.
气管插管
E.
同步直流电除颤
查看完整题目与答案
【判断题】施工单位安全生产许可证的有效期为5年。
A.
正确
B.
错误
查看完整题目与答案
【单选题】施工企业安全生产许可证的有效期为达( )年。
A.
2
B.
3
C.
4
D.
5
查看完整题目与答案
相关题目：
【单选题】下列不属于心理物理量表种类的是:
A.
顺序量表
B.
等距量表
C.
比例量表
D.
数值量表
查看完整题目与答案
【简答题】• The exporter checks carefully all the terms and conditions listed in the L/C. If all terms and conditions are acceptable, the exporter will make the shipment within the time specified in the L/C. If...
查看完整题目与答案
【单选题】心电图检查发现为急性心肌梗死入监护室,1h后发现患者心电图出现QRS—T波消失,出现大小不等,极不规则的曲线波,即刻采取的首要措施是
A.
患者,女性,70岁,冠心病心绞痛5年,平日心绞痛发作时含服硝酸甘油1~3min止痛,今日心绞痛发作3h服用上述药物无效,急送医院。心内注射利多卡因
B.
非同步直流电除颤
C.
高浓度吸氧
D.
气管插管
E.
同步直流电除颤
查看完整题目与答案
【单选题】There are two key reasons why employees want flexible work. One is that their work does not require being in the office all the time. The other is that
A.
people in the generations following the Baby Boomers have less commitment to work and a lower work ethic.
B.
many jobs no longer require face-to-face contact with co-workers or clients, so it makes little difference what location the employees work from or what time they are “at work.”
C.
employees are highly involved in community service and leisure pursuits.
D.
they have long commutes between home and their workplace.
查看完整题目与答案
【单选题】建筑施工安全生产许可证的有效期为（ ）年。
A.
1
B.
2
C.
3
D.
5
查看完整题目与答案
【单选题】In which of the following time frames do the demands require the GM to develop communication channels and to nurture relationships that extend beyond the specific domain of the hotel? ( )
A.
Short-run
B.
Medium-run
C.
Intermediate run
D.
Long-run
E.
Only a and b
查看完整题目与答案
【单选题】What is the main purpose of the conversation?
A.
To outline the duties the professor requires of his teaching assistant.
B.
To discuss how to best organize a teaching assistantship position.
C.
To debate the best way to supplement regular instructional time.
D.
To illustrate the importance of tutorials to student comprehension.
查看完整题目与答案
【单选题】心电图检查发现为急性心肌梗死入监护室,1h后发现患者心电图出现QRS—T波消失,出现大小不等,极不规则的曲线波,即刻采取的首要措施是
A.
心内注射利多卡因
B.
非同步直流电除颤
C.
高浓度吸氧
D.
气管插管
E.
同步直流电除颤
查看完整题目与答案
【判断题】施工单位安全生产许可证的有效期为5年。
A.
正确
B.
错误
查看完整题目与答案
【单选题】施工企业安全生产许可证的有效期为达( )年。
A.
2
B.
3
C.
4
D.
5
查看完整题目与答案