fix task.py with no dest_sample_rate task; fix bug in train and infer

mengzhe.cmz

2023-04-12 1ad439f96b8cdbca98ee95b886d692dfa20e85ce

1
2
3
4
5
6
7
8
+    plus
-    minus
/    divided
÷    divided
:    divided
×    times
*    times
·    times