一个有效的工具变量应满足如下两个条件 A: corr(Zi, Xi) = 0 and corr(Zi, ui) ≠ 0 B: corr(Zi, Xi) = 0 and corr(Zi, ui) = 0. C: corr(Zi, Xi) ≠ 0 and corr(Zi, ui) = 0 D: corr(Zi, Xi) ≠ 0 and corr(Zi, ui) ≠ 0

已知某线性相位FIR滤波器的零点Zi,则下面哪些点仍是该滤波器的零点 A: Zi* B: 1/Zi* C: 1/Zi D: 0

Who is the representative of Confucians?‎ A: Mencius B: Lao Zi C: Xun Zi D: Confucious

Lao Zi was known as the Chinese Nietzsche.

Zi means Ziwei Star and Ziwei Star is __________________________________.

___ talks about Confucius like this: Confucius is a sage of being appropriate to the time; Confucius is a man of great attainments. A: Mencius B: Xun Zi C: Mo Zi

不合法的赋值语句是A a=b=58; B k=int(a+b); C a=58,b=58; D --i; A: a=b=58 B: k=int(a+b); C: a=58,b=58; D: --i;

改进dh参数di参数含义为以下哪个选项？ A: 沿着Zi轴，从Xi-1移动到Xi的距离 B: 沿着Xi-1轴，从Zi-1旋转到Zi的距离 C: 绕着Zi轴，从Xi-1旋转到Xi的角度 D: 绕着Xi-1轴，从Zi-1移动到Zi的角度

能正确表示“当x的取值在[-58,-40]和[40,58]范围内为真,否则为假”的表达式是: (x>= -58) && (x<= -40) && (x>=40) && (x<=58)|(x>= -58) && (x<= -40) || (x>=40) && (x<=58)|(x>= -58) | |(x<= -40) && (x>=40) || (x<=58)|(x>= -58) || (x<= -40) || (x>=40) || (x<=58)

西班牙语中，不存在ze、zi这种拼写方式。