【多选题】定值控制系统中,在阶跃扰动作用下,过渡过程有哪几种形式(即过渡过程的阶跃响应曲线)?
【简答题】为什么称郑成功为民族英雄?清政府是在哪一年设置府内?有什么意义?(13分)
【单选题】His list, in descending order of importance, was: energy, water, food, environment, poverty, terrorism and war, disease, education, democracy, and population.
A.
His list contains ten items: energy, water, food, environment, poverty, terrorism and war, disease, education, democracy, and population. They are arranged in such a way that each item is more important than the one that follows it.
B.
The ten items on his list -- energy, water, food, environment, poverty, terrorism and war, disease, education, democracy, and population -- are gradually losing importance now.
【单选题】His list, in descending order of importance, was: energy, water, food, environment, poverty, terrorism and war, disease, education, democracy, and population. (Para. 4)
A.
His list contains ten items: energy, water, food, environment, poverty, terrorism and war, disease, education, democracy, and population. They are arranged in such a way that each item is more important than the one that follows it.
B.
The ten terms on his lists---energy, water, food, environment, poverty, terrorism and , disease, education, democracy, and population--- are graduall losing impoetance now.
【单选题】老师组织集体游戏时,发现红红独自一人专注地画 画,老师走过去对她说:“要不要先跟大家一起玩游 戏?玩好再来画,好吗?”红红表示想继续画,老师 同意了并告诉她:“画好了,来找大家玩游戏。”该 教师的做法是( )。
【简答题】为什么称郑成功为民族英雄?清政府在哪一年设置府?有什么意义?
【单选题】关于尾递归下面那个描述是错误的:
A.
尾递归是一种递归,它首先执行计算,然后进行递归调用。
B.
尾递归当前步骤的结果被传递到下一个递归调用。
C.
尾递归遵循一个实现规则: 递归调用必须是方法的最后一次调用。
D.
要将递归声明为尾递归,需要在递归函数之前使用tail修饰符。
【单选题】下面关于递归函数,描述错误的是__________。
D.
每进入更深一层的递归时,问题规模相对于前一次递归是不变的
【简答题】disease, education, (9)____________, and population.