选出错误的一项

( )1. Jim is very taller than Jack.

            A  B    C       D

( )2. How long is the farm from here?

                  A        B      C                   D

( )3. He reads much more carefully than she.

                    A        B             C                         D

( )4. This story is funer than that one.

                  A         B    C       D

( )5. There's few time to play games.

               A        B                C          D

以下哪些因素可以引起光路LOS告警的产生？（）

A.输入无光功率

B.光功率过低

C.光功率过高

D.OOF持续3ms以上