????:1???????200??:????????????

2?2023???????

3????????150???

4???????????

5???????

???????10????!???????:???????

??,??????«???????????»???,??2??18??20???????????,«??????2»??????1??????????8???

2??????18??,??????,??????10?????????“???????????2”!?????????:“«??????2»??22?????????????,?????????,????”

???,????cos(????)?:??????“??”,???“????”,??????????

??????cos????????,??:??cos?????????

??????,??,?????????:“???,????????????,?????,??”

????,???“??????????”,???????????«??»??;??“????”,??????????????????????????«?????»???????????,??????????????

????????,??,“???“???”?????????!”“??!”“?,??????”

«?2»?????????

22??

????????????????:???!?!

?2??????18??,«??????????»?,?????2?????????????????????19????????2?22???,??

?????????????????????(2??????18????????),«?????????»??,??,?????????“???”???????,2??22????????,?????????????8?,«???????»????(?????)???123.2???

?????????????????,????????????????????,«????????»??,??????????????,??????????:“?,????????,??????????,???”

???????,???????????????«??»??????,????????«?????????»????,???“?”?????

“???'???????????«????????????????»'????????????,?????????”??????,?????????????????????,??

??????????????????????,??????????,?????????????:“??,?????????????????”?????????????????????????????

??/??:?????????????

(???)

?????????????????????:???