【单选题】铰链四杆机构的压力角是指在不计摩擦情况下主动件通过连杆作用于( )上的力与该力作用点速度方向线间所夹锐角。
【单选题】In the following sentences, which one is an example of paradox?
A.
We've seen the unfurling of the flags, the lighting of candles,the griving of blood, the saying of prayers.
B.
Words are daggers when spoken in anger.
C.
The beautiful bouquet blossomed in the bright sun.
D.
If I know one thing, it's that I know nothing.
【判断题】标志是说明总体特征的名称 , 而指标是说明总体单位的特征的概念 。
【判断题】Paradox: I know that I know nothing
【单选题】I know one thing: that I know nothing. - Socrates (via Plato)
【简答题】编程实现下三角”9*9“乘法表。(使用while循环实现) 1 2 4 3 6 9 4 8 12 16 5 10 15 20 25 6 12 18 24 30 36 7 14 21 28 35 42 49 8 16 24 32 40 48 56 9 18 27 36 45 54 63 72 81
【简答题】先画出算法流程图,再 编程实现:输出以下三角形的九九乘法表。 1 2 3 4 5 6 7 8 9 -- -- -- -- -- -- -- -- -- 1| 1 2| 2 4 3| 3 6 9 4| 4 8 12 16 5| 5 10 15 20 25 6| 6 12 18 24 30 3...