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刷刷题刷刷变学霸
举一反三
【单选题】According to a survey, which was based on the responses of over 188,000 students, today’s traditional-age college freshmen are "more materialistic and less altruistic(利他主义的)"than at any time in the 17...
A.
5), the author means that ______.A. business management should be included in educational programsB. human wisdom has accumulated at an extraordinarily high speedC. human intellectual development has reached new heightsD. the importance of a broad education should not be overlooked
【单选题】下列有关计算机性能的描述中，不正确的是
A.
一般而言，主频越高，速度越快
B.
内存容量越大，处理能力就越强
C.
计算机的性能好不好，主要看主频是不是高
D.
内存的存取周期也是计算机性能的一个指标
【单选题】According to a survey, which was based on the responses of over 188,000 students, today’s traditional-age college freshmen are "more materialistic and less altruistic (利他主义的) " than at any time in the...
A.
have never attached so much importance to moral sense
B.
have never been so financially well off as today
C.
have never been so materialistic as today
D.
have never been so interested in the arts
【单选题】涡环对飞机性能有哪些影响（） 1.旋翼拉力显著减小，下降率急剧增大 2.直升机抖动和摇晃 3.稳定性和操纵性变差
A.
1、2、3
B.
1、3
C.
1、2
D.
2、3
【单选题】According to a survey, which was based on the responses of over 188,000 students, today’s traditional-age college freshmen are "more materialistic and less altruistic(利他主义的)"than at any time in the 17...
A.
the influences of their instructors
B.
the financial goals they seek in life
C.
their own interpretations of the courses
D.
their understanding of the contributions of others
【单选题】材料的表观密度所对应的体积包括（ ）
A.
矿质实体体积
B.
矿质实体体积、闭口孔隙体积
C.
矿质实体体积、闭口孔隙体积、开口孔隙体积、材料颗粒间空隙体积
D.
矿质实体体积、闭口孔隙体积、开口孔隙体积
【单选题】已知 HAc的pKa=4.75,将0.Olmol/L HAc溶液与0.1mol/L NaAc溶液等体积 混合,则此缓冲溶液的 pH为( )
A.
3.75
B.
4.75
C.
5.75
D.
9.25
【多选题】在气相条件下(T='500' K)，有相同体积的甲、乙两容器，甲容器充入1 g SO2、l gO2，乙容器充入2 g SO2、2g O2则下列叙述中正确的是
A.
化学反应速率：乙>甲
B.
平衡后SO2的浓度：乙>甲
C.
SO2转化率：乙<甲
D.
平衡后O2的体积分数：乙>甲
【单选题】According to a survey, which was based on the responses of over 188,000 students, today"s traditional-age college freshmen are "more materialistic and less altruistic (利他主义的 )" than at any time in the...
A.
have never been so materialistic as today
B.
have never been so interested in the arts
C.
have never been so financially well off as today
D.
have never attached so much importance to moral sense
相关题目：
【单选题】According to a survey, which was based on the responses of over 188,000 students, today’s traditional-age college freshmen are "more materialistic and less altruistic(利他主义的)"than at any time in the 17...
A.
5), the author means that ______.A. business management should be included in educational programsB. human wisdom has accumulated at an extraordinarily high speedC. human intellectual development has reached new heightsD. the importance of a broad education should not be overlooked
【单选题】如图，在正三棱锥中，分别是的中点，，且，则正三棱锥的体积是（）
A.
B.
C.
D.
【单选题】下列有关计算机性能的描述中，不正确的是
A.
一般而言，主频越高，速度越快
B.
内存容量越大，处理能力就越强
C.
计算机的性能好不好，主要看主频是不是高
D.
内存的存取周期也是计算机性能的一个指标
【单选题】下列几种柴油机性能指标中，不属于动力性指标的是 （ ）。
A.
功率
B.
燃油消耗率
C.
扭矩
D.
转速
【单选题】According to a survey, which was based on the responses of over 188,000 students, today’s traditional-age college freshmen are "more materialistic and less altruistic (利他主义的) " than at any time in the...
A.
have never attached so much importance to moral sense
B.
have never been so financially well off as today
C.
have never been so materialistic as today
D.
have never been so interested in the arts
【单选题】涡环对飞机性能有哪些影响（） 1.旋翼拉力显著减小，下降率急剧增大 2.直升机抖动和摇晃 3.稳定性和操纵性变差
A.
1、2、3
B.
1、3
C.
1、2
D.
2、3
【单选题】小型对讲机性能优良，体积小，（）十分广泛。
A.
规格
B.
形状
C.
功能
D.
用途
【单选题】According to a survey, which was based on the responses of over 188,000 students, today’s traditional-age college freshmen are "more materialistic and less altruistic(利他主义的)"than at any time in the 17...
A.
the influences of their instructors
B.
the financial goals they seek in life
C.
their own interpretations of the courses
D.
their understanding of the contributions of others
【单选题】污泥含水率从99.3%降到95.1%，求污泥浓缩后体积是原来的( )。
A.
1/2
B.
1/7
C.
1/4
D.
1/5
【单选题】材料的表观密度所对应的体积包括（ ）
A.
矿质实体体积
B.
矿质实体体积、闭口孔隙体积
C.
矿质实体体积、闭口孔隙体积、开口孔隙体积、材料颗粒间空隙体积
D.
矿质实体体积、闭口孔隙体积、开口孔隙体积
【单选题】已知 HAc的pKa=4.75,将0.Olmol/L HAc溶液与0.1mol/L NaAc溶液等体积 混合,则此缓冲溶液的 pH为( )
A.
3.75
B.
4.75
C.
5.75
D.
9.25
【单选题】对于类分离，柱床体积一般为样品溶液体积的多少倍？（ ）
A.
5
B.
25
C.
10
D.
2
【多选题】在气相条件下(T='500' K)，有相同体积的甲、乙两容器，甲容器充入1 g SO2、l gO2，乙容器充入2 g SO2、2g O2则下列叙述中正确的是
A.
化学反应速率：乙>甲
B.
平衡后SO2的浓度：乙>甲
C.
SO2转化率：乙<甲
D.
平衡后O2的体积分数：乙>甲
【单选题】具有极大偶然性和随机性，无先例可循的决策。比如，一个新产品的营销组合方案决策，属于()
A.
不确定型决策
B.
非程序化决策
C.
风险型决策
D.
程序化决策
【单选题】According to a survey, which was based on the responses of over 188,000 students, today"s traditional-age college freshmen are "more materialistic and less altruistic (利他主义的 )" than at any time in the...
A.
have never been so materialistic as today
B.
have never been so interested in the arts
C.
have never been so financially well off as today
D.
have never attached so much importance to moral sense
【判断题】辐射可导致随机性效应和确定性效应。
A.
正确
B.
错误