????:1?????????:??????95????

2??????95??

3??????????

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???

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

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

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

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

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

(?????????????????????)

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