Shaikh Fahim has already shown in recent public statements that he is inclined （to be forthright ）about the threat posed by the UAE’s neighbours across the Gulf. （） A: forthcoming B: former C: upright D: straightforward

根据图所示的电路，已知U1=5V，U2=3V，U3=4V，U6=6V，U4=2V，则Uae为（） A: -6V B: 6V C: 4V D: -2V

根据图所示的电路，已知U1=5V，U2=3V，U3=4V，U6=6V，U4=2V，则Uae为（） A: -6V B: 6V C: 4V D: -2V