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【单选题】
某培养基中有葡萄糖,该糖的作用是
A.
提供碳源
B.
生化反应底物
C.
A+B
D.
均不是
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皮皮学刷刷变学霸
举一反三
【判断题】是本质线性回归方程,可以把它们转化为线性回归方程 ln[(1- y i )/y i )=-β 0 -β 1 x i 。
A.
正确
B.
错误
【判断题】The Cabinet in UK works on the principle of collective responsibility and individual ministerial responsibility
A.
正确
B.
错误
【简答题】What is “shadow cabinet”? What role does it play in the UK government?
【单选题】Which of the following is not the function of cabinet in UK?
A.
Making policies
B.
Elect Prime Minister
C.
Coordinate government departments
D.
Exercise supreme control of government
【判断题】The law-making or the legislative body in the UK is the cabinet.
A.
正确
B.
错误
【单选题】回归模型为ln(y)=a_1 + a_2*ln(x) + u_i,请问估计系数a_2的经济学含义是
A.
X增加1%,Y增加100*a_2%
B.
X增加1%,Y增加a_2%
C.
X增加一单位,Y增加100*a_2%
D.
X增加一单位,Y增加a_2
【单选题】Whenever a person is made a minister of Cabinet rank in the UK, he or she is made a member of ________.
A.
the House of Lords
B.
the House of Commons
C.
the Privy Council
D.
Parliament
【单选题】两相故障时,故障点的正序电压UK1与负序电压UK2的关系为()。
A.
UK1>UK2;
B.
UK1=UK2;
C.
UK1
D.
UK1=UK2=0。
【单选题】在运算指令中,形式为#i=LN[#j]代表的意义是
A.
离心率
B.
自然对数
C.
轴距
D.
螺旋轴弯曲度
【简答题】已知函数f(x)=e x -ln(x+1) (I)求函数f(x)的单调区间; (II)证明: e+ e 1 2 + e 1 3 +…+ e 1 n ≥ln(n+1)(n∈ N * ,e为常数) .
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