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【单选题】
关于社会系统研究方法,下列说法有误的是( )。A.
系统研究方法是在对系统科学的最新思维成果进行哲学方法论提炼的产物
B.
系统研究方法是解决复杂系统问题的科学方法。
C.
系统研究方法是辩证思维方法在当代的最新发展
D.
系统研究方法是伴随现代科学尤其是系统科学的形成发展而产生的，在古代没有其思想渊源
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举一反三
【单选题】杆件的受力和截面如图,下列说法中,正确的是
A.
σ 1 >σ 2 >σ 3 ;
B.
σ 2 >σ 3 >σ 1
C.
σ 3 >σ 1 >σ 2
D.
σ 2 >σ 1 >σ 3
【单选题】Reading is not the only way to gain knowledge of the work in the past. There is another large. reservoir which may be called experience, and the college students will find, that every craftsman (工匠) h...
A.
personal experience
B.
wild weeds among good plants
C.
the information from the parents
D.
the vast store of traditional practices
【单选题】Reading is not the only way to gain knowledge of the work in the past. There is another large reservoir (知识库) which may be called experience, and the college student will find that every craftsman (工匠...
A.
personal experience
B.
wild weeds among good plants
C.
the information from the parents
D.
the vast store of traditional practices
【单选题】Reading is not the only way to gain knowledge of the work in the past. There is another large reservoir (知识库) which may be called experience, and the college student will find that every craftsman (工匠...
A.
personal experience
B.
wild weeds among good plants
C.
the information from the parents
D.
the vast store of traditional practices
【简答题】沈阳市某高中有高一学生600人，高二学生500人，高三学生550人，现对学生关于消防安全知识了解情况进行分层抽样调查，若抽取了一个容量为n的样本，其中高三学生有11人，则n的值等于（ ）。
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