患者发热最可能的原因是
A．伤寒
B．疟疾
C．革兰阴性杆菌败血症
D．急性血吸虫病
E．恶性组织细胞增生性疾病
参考答案：B
— I don’t understand why you didn’t go to the lecture yesterday afternoon.
—I’m so sorry. But I _________ my homework.
A．had done
B．was doing
C．would do
D．am doing
对运行中变压器油通常采取的防劣措施有哪几种？
