【判断题】共射放大电路采用恒流源做有源负载后,电压放大倍数增大了,输出电阻减小了。
【判断题】共射放大电路采用有源负载后输出电阻减小了。
【多选题】关于导弹的控制,下列说法正确的是()。
A.
控制关系方程描述了导弹的四个操纵机构是如何偏转的
B.
当实际运动参数与按导引关系要求的运动参数不一致时,就产生控制信号
C.
控制系统将根据实际参数与要求参数的误差使操纵机构偏转,从而减小此误差
D.
导弹实际飞行中,在控制系统的作用下,实际参数与要求参数的误差一定会迅速变为零并一直保持
【单选题】听力原文:W: How did Rosa do on her English exam? M: She passed with flying colors. What does the man say about Rosa?
A.
She has already taken the exam.
B.
She did very well on the exam.
C.
She managed to pass the exam.
【简答题】普通MIMO扇区的情况下,扇区使用的天线端口分别在两个RRU上称之为[ 填空(1)]扇区。
【判断题】共射放大电路采用有源负载后输出电阻减小了
【判断题】共射放大电路采用有源负载后输出电阻减小了。( )
【单选题】听力原文:W: How did Rosa do on her English exam? M: She passed with flying colors. What does the man say about Rosa?
B.
She did very well on the exam.
C.
She managed to pass the exam.
D.
She has already taken the exam.