【单选题】R 为实数集,运算*定义为:a,b∈R, a ∗ b = a ⋅ | b |,则代数系统(R,∗)是( )。
【判断题】In TCM, the understanding of the human body is based on the holistic understanding of the universe as described in Daoism.
【单选题】在实数集R中定义一种运算“*”,对任意a,b∈R,a*b为唯一确定的实数,且具有性质: (1)对任意a,b∈R,a*b=b*a; (2)对任意a∈R,a*0=a; (3)对任意a,b∈R,(a*b)*c=c*(ab)+(a*c)+(c*b)-2c. 关于函数 f(x)=(2x)* 1 2x 的性质,有如下说法:①函数f(x)的最小值为3;②函数f(x)为奇函数;③函数f(x)的单调递增区间为 (-...
【单选题】患者,男,56岁,因糖尿病酮症酸中毒急诊入院,急诊科已给予输液、吸氧,现准备用平车送病房,护送途中护士应重点观察
【简答题】在实数集R中定义一种运算“*”,对任意a,b∈R ,a*b为唯一确定的实数,且具有性质: (1)对任意a,b∈R,a*b=b*a; (2)对任意a∈R,a*0=a; (3)对任意a,b∈R,(a*b)*c=c*(ab)+(a*c)+(c*b); 若 ,则x=( )。
【单选题】Miss Smith is a friend of ______.
【简答题】A.It's a one-bedroom apartment. B.It's not expensive. C.Miss Smith will live there with her. D.It's very convenient to live and go to the university.
【单选题】What is Miss Smith's suggestion to meet Wang Ming's request at last?
A.
Ask the tourists to pay more money.
B.
Recommend some specialty restaurants ont the free day.
D.
Miss Smith has no idea.
【简答题】The first modern Olympic s were held in1896 for the understanding and friendship among nations. A)因为国家之间的理解和友谊,所以举行了 1896年的第一届现代奥运会。 B)1896年首届奥运会的比赛项目,赢得了各国的友好的理解。 C)1896年第一届现代奥运会举行的目的是为了国家之间的理解和友...