心源性水肿的特点是
A．踝部明显B．水肿以脚、眼睑水肿明显C．面部水肿明显D．腹部水肿明显E．腰背部水肿明显
参考答案：A
Last Sunday I took my daughter to a friend’s birthday party, where we________for two hours.
A．stayed
B．had stayed
C．would stay
D．were staying
可控并联电抗器（CSR）是一种新型FACTS装置，它（）于电力系统。
A.串联
B.并联
C.串并联
D.并串联
