工厂供电系统决定电能损耗的主要因素是（）
A、变压器损耗
B、线路损耗
C、电动机损耗
D、电力电容器损耗
参考答案：A, C
根据句意及首字母提示补全单词。
1. —Can you come to my home for dinner?
—S _____ , I'd love to
2. I'm ill ,so I have to see the d _____ .
3. I have t _____ much homework to do this weekend.
4. Thanks for h _____ me with my English
流行性脑脊髓膜炎的确诊依据是
A．冬春季发病B．高热、头痛、呕吐及脑膜刺激征C．脑脊液呈化脓性改变D．皮肤黏膜瘀点、瘀斑E．皮肤瘀点涂片查到病原菌
