【单选题】What do you know about the Seal of the United States?
A.
Its final version came into being in the 20th century.
B.
Jefferson first began to consider its design in 1774.
C.
It has gone through an even longer path of evolution than Uncle Sam.
【单选题】下面使用类比推理恰当的是 [ ]
A.
“若a●3=b●3,则a=b”类推出“若a 0 =b 0 ,则a=b”
B.
“若(a+b)c=ac+bc”类推出“(a●b)c=ac●bc”
C.
“(a+b)c=ac+bc”类推出“ = + (c≠0)”
D.
“(ab) n =a n b n ”类推出“(a+b) n =a n +b n ”
【简答题】Do you know anything about Diane Birch? She is a young singer 小题1: music takes listeners back to the soul and pop music of the 1970s. She spent her childhood 小题2: moving from one place to another, she...
【单选题】( )站姿适用于训练标准体态和重要领导审查检阅时。
【单选题】What do you know about the Seal of the United States?
A.
lts final version came into being in the 20th century.
B.
Jefferson first began to consider its design in 1774.
C.
It has gone through an even longer path of evolution than Uncle Sam.
【单选题】Do you know something about the ________ May 4th Movement?
【单选题】若a>b,c>0,则ac>bc,若当c<0时ac?bc< /div>
【判断题】离网型风电机组和并网型风电机组中的离网型风电机组一般指单立运行,所发出的电能不接入电网的风力发电机组。
【单选题】( )站姿适用于训练标准体态和重要领导审查检阅时
【简答题】给出下列命题:①若a,b∈R + ,a≠b,则a 3 +b 3 >a 2 b+ab 2 ;②若a,b∈R + ,a<b,则 a+m b+m < a b ;③若 a c 2 > b c 2 ,则ln a>ln b; ④ 当x∈(0, π 2 )时,sinx+ 2 sinx 的最小值为2 2 ;其中正确命题的个数为( ) A.0个 B.1个 C.2个 D.3个