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【单选题】
40) In the absence of technological progress, which of the following is true when the economy is operating at the steady state?
A.
The growth of output per worker is equal to the saving rate.
B.
The growth of output per worker is equal to the rate of investment.
C.
The growth of output per worker is zero.
D.
The growth of output per worker is equal to the rate of depreciation.
E.
none of the above
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【简答题】The Bodleian (博得雷利) Library is the main research library of the University of Oxford (牛津) . It is one of the six national copyright libraries and, as the founder of the library intended, it is a resou...
【简答题】It is six o’clock in the morning. You are asleep in my left arm and I am learning the art of one-handed typing. Your mother, more tired yet more happy than I’ve ever known her, is sound asleep in the ...
【多选题】如图是硫酸试剂标签上的部分内容.下列说法正确的是(  ) 硫酸  化学纯(CP) (500mL) 品名:硫酸 化学式:H 2 SO 4 相对分子质量:98 密度:1.84g/cm 3 质量分数:98%
A.
该硫酸的物质的量浓度为9.2mol/L
B.
将该硫酸稀释会放大量热
C.
配制200mL4.6mol/L的稀硫酸需取该硫酸50mL
D.
该硫酸与等体积的水混合所得溶液的物质的量浓度等于9.2mol/L
【单选题】马铃薯食用的部分是(   )。
A.
肉质茎
B.
鳞茎
C.
块茎
D.
球茎
【单选题】化学家们合成了如图所示的一系列的星烷,如三星烷、四星烷、五星烷等.下列说法正确的是(  )
A.
它们之间互为同系物
B.
六星烷的化学式为C 18 H 24
C.
三星烷与丙苯互为同分异构体,四星烷与 互为同分异构体
D.
星烷的一氯代物均只有2种,而三星烷的二氯代物有4种
【多选题】大学生怎样积极投身志愿服务活动( )
A.
到最需要的地方去
B.
帮助弱势群体
C.
做力所能及的事
D.
参与城市社区建设
【单选题】What is learned about the flushing?
A.
It is performed every six months.
B.
It is done to remove dirt from the water system.
C.
It was ordered to be done by the State Water Commission.
D.
It requires shutting down the municipal water system temporarily.
【判断题】Chinese is commonly used in modern China. It is one of the six working language designated by the United Nations.
A.
正确
B.
错误
【多选题】大学生积极投身志愿服务活动,需要怎样做?( )
A.
帮助弱势群体
B.
到最需要的地方去
C.
做力所能及的事情
D.
爱国爱民
E.
尊老爱幼
【单选题】下列等式中,正确的是( )。
A.
1KB=1024×1024B
B.
lMB=1024B
C.
1KB=1024MB
D.
lMB=1024×l024B
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