如图所示,三相正弦交流电路中,对称负载接成三角形,已知电源电压UL=220V,每相阻抗Z=15+j16.1Ω,当AB相断路时,电流表的读数是()。
A. 10A
B. 5A
C. 17.3A
D. 8.6A
根据地租理论,最劣等的土地()
A. 无级差地租Ⅱ和绝对地租
B. 无级差地租Ⅰ和绝对地租
C. 无级差地租Ⅰ,有绝对地租
D. 有级差地租,无绝对地租
听力原文:M: How will you go to the meeting? Shall I give you a lift?
W: No, thanks. Mary will take me there in her car.
How is the woman going to the meeting?
A. By train.
By car.
C. By bike.