光纤有单模式（singlemode）和多模式（multimode）两种，光纤的接口标准有ST、FC、SC、LC和MTRJ等。
参考答案：对
根据旬意和首字母提示完成句子。
1. D_______ she have a TV? Yes, she does.
2. 一How do you s_______ pen? P-E-N, pen.
3. He doesn't play sports, he only w_______ them on TV.
4. Does Tom have a baseball b_______?
5. Let's watch TV. No, it's b_______.
6. I don't h_______ a volleyball.
7. L______ play soccer together.
LMT是本地维护工具，不具备性能统计功能，可远程接入单个网元设备。（）
