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【简答题】
设数列{a n }满足 a 1 =0，4 a n+1 =4 a n +2 4 a n +1 +1 ，令 b n = 4 a n +1 ． （1）试判断数列{b n }是否为等差数列？并求数列{b n }的通项公式； （2）令 T n = b 1 × b 3 × b 5 ×…× b (2n-1) b 2 × b 4 × b 6 ×… b 2n ，是否存在实数a，使得不等式 T n b n +1 ＜ 2 lo g 2 (a+1) 对一切n∈N * 都成立？若存在，求出a的取值范围；若不存在，请说明理由． （3）比较 b n b n+1 与 b n+1 b n 的大小．
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【单选题】下列描述错误的是：
A.
《快递服务》标准规定，快件投递时间不应超出快递服务组织承诺的服务时限
B.
快递服务的实物传递性，决定了传递速度是最重要的反映快递服务质量的核心要素
C.
保证准确、安全的前提下，快递服务的时效性，突出表现再用户对交寄快件的快速传递要求上
D.
快递服务组织可以根据自己的实际情况，制订并发布更有针对性的、等于《快递服务》标准的时限承诺
【单选题】下列对要约描述错误的是( )
A.
要约书面生效的时间是送达到受要约人能够控制的地方开始生效
B.
在要约到达受要约人之前可撤回要约
C.
要约的撤销是撤销要约的通知应当在受要约人发出承诺之前到达受要约人
D.
一份不可撤销要约即使在该要约还没送达到受要约人时也不能撤回
【单选题】165 A project can best be defined as:
A.
Series of non-related activities designed to accomplish single and multiple objectives.
B.
Coordinated effort of related activities designed to accomplish a goal without a well-established end point.
C.
Cradle-to-grave activities which must be accomplished in less than one year and consumes human and non-human resources.
D.
Any undertaking with a definable time frame, well-defined objectives, and consumes both human and non-human resources with certain constraints.
E.
All of the above.
【单选题】A project can best be defined as:
A.
Series of non-related activities designed to accomplish single and multiple objectives.
B.
Coordinated effort of related activities designed to accomplish a goal without a well-established end point.
C.
Cradle-to-grave activities which must be accomplished in less than one year and consumes human and non-human resources.
D.
Any undertaking with a definable time frame, well-defined objectives, and consumes both human and non-human resources with certain constraints.
E.
All of the above.
【单选题】关于标本外送，下列哪项描述是错误的( )
A.
参考实验室必须对送检实验室有检测时效性的承诺
B.
送检实验室可以要求参考实验室提供室内质控和室间质评报告
C.
参考实验室可以将检验报告直接送给申请检验负责人士
D.
当参考实验室的检测报告与患者病情不相符时，送检实验室应对结果给予新的解释
E.
检验报告单是否包含参考实验室的名称和地址，可视双方协议而定
【简答题】病毒营销的特点有哪些?
【简答题】Energy pod: It was designed by a US company with NASA technology. It puts the human body in the best sleeping position and blocks outside noise to create an ideal napping experience. Silicon Valley hi...
【单选题】Best wishes ____ children _____ June 1st.
A.
for ; to
B.
to; on
C.
for; on
D.
to; for
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