?????1?30?????? ??,30????????,?????5.6????,?21??????????6.4?????

?????????????????????????,30???10??11??????????,?5.6?,????????????10????????,?????5?,?????????????10????????????4?,?3.2?4.3?????,?????

??,????????????????????????,??????,????????????????

???,30?10?11???5.2????????(?) ????????????:???? “????”_?????

?? ???????????? ????5.6?

????:1?????:???????

2???????

3????????

4??????????

5????????vx

?????1?30?????? ??,30????????,?????5.6????,?21??????????6.4?????

?????????????????????????,30???10??11??????????,?5.6?,????????????10????????,?????5?,?????????????10????????????4?,?3.2?4.3?????,?????

??,????????????????????????,??????,????????????????

???,30?10?11???5.2????????(?) ????????????:????