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【简答题】
There are 10 incomplete sentences here. You should fill in each blank with the proper form of the word given in brackets. 1. In class, the teacher asked the students to listen (care) _____________. 2. I wasn’t very (succeed) _____________ helping my brother achieve his goal. 3. I sincerely thank you for your __________ (invite)to the exhibition. 4. We spend two hours (drive)____________ in Beijing last summer. 5. That was the most (attract) _____________ program they could think of. 6. Your manager will (assignment)____________ you your work for today. 7. If you (management)_____________ to do this, you’ll have opportunity to win. 8. The boy was (surround)____________ by many strange people. 9. Tim is a good man who is (response)___________ for his family. 10. The boy said that he wanted to be a scientist when he (grow)__________ up.
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【判断题】一般电源进线侧接通用变频器的端子R S T,调速电机接该变频器的UVW端子。( )
A.
正确
B.
错误
【简答题】设函数f(x)=ax 2 +bx+c(a>0)且f(1)=- a 2 . (1)求证:函数f(x)有两个零点; (2)设x 1 ,x 2 是函数的两个零点,求|x 1 -x 2 |的取值范围.
【单选题】MCS-51 系列单片机的定时器T0用作定时方式时,采用工作方式1,则初始化编程为______。
A.
TMOD=0x01
B.
TMOD=0x50
C.
TMOD=0x10
D.
TCON=0x02
【多选题】CFG 桩原材料主要有( )。
A.
水泥
B.
石灰
C.
粉煤灰
D.
碎石
E.
石屑
【单选题】男性,30岁,血管性血友病,凝血因子Ⅷ活性为3%,血管性血友病因子抗原含量为32.5%,瑞斯脱霉素辅因子活性为0%。血浆和血小板中无多聚体,染色体检查:血管性血友病因子基因部分缺失,故该患者分型为
A.
血管性血友病Ⅰ型
B.
血管性血友病ⅡA亚型
C.
血管性血友病ⅡB亚型
D.
血管性血友病ⅡM亚型
E.
血管性血友病Ⅲ型
【单选题】男性,30岁,血管性血友病,凝血因子Ⅷ活性为3%,血管性血友病因子抗原含量为32.5%,瑞斯脱霉素辅因子活性为0%。血浆和血小板中无多聚体,染色体检查:血管性血友病因子基因部分缺失,故该患者分型为
A.
血管性血友病工型
B.
血管性血友病ⅡA亚型
C.
血管性血友病Ⅱ8亚型
D.
血管性血友病ⅡM亚型
E.
血管性血友病Ⅲ型
【简答题】设函数f(x)=xlnx(x>0). (1)求函数f(x)的最小值; (2)设F(x)=ax 2 +f′(x)(a∈R),讨论函数F(x)的单调性.
【判断题】The first hijacked plane crashed into the north tower at 8:15.
A.
正确
B.
错误
【单选题】The hijacked plane Was scheduled to fly from ______ to ______.
A.
India Afghanistan
B.
Afghanistan India
C.
India Pakistan
D.
Pakistan India
【简答题】设函数f(x)=xlnx(x>0). (1)求函数f(x)的最小值; (2)设F(x)=ax 2 +f'(x)(a∈R),讨论函数F(x)的单调性; (3)斜率为k的直线与曲线y=f'(x)交于A(x 1 ,y 1 )、B(x 2 ,y 2 )(x 1 <x 2 )两点,求证: .
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