?????յ????????????ʱ?䲻??????????????ڵ??????????Ƿdz????صģ?????Σ????????Ľ????????????Լ?˿յ?????????һ???˽?????????ϴ????յ??Ĺ??????ɣ?

????1???????õķ?????

????a????????ˢ??ˢ??

????b???????ø?ѹˮ??ϴ??

????c?????ܴӷɳ?????????ˮ??ϴ??

????d???????????????ܿ??????ڹ?????????????

????ԭ???һ????????????ϴ????ɹ??????????ױ?????ɷ۳?ֱ?Ӵ???????????

????2????ȷ?ķ?????

????a???õ?ѹ??ѹ????????0.5mp????????ˮ?ӷ۳???????ķ????ϴ??

????b?????????????????ڷ۳??????????????????1??2cm??????

??????ת?յ????????15-30???ӣ????ڻ?????ˮ?͹?·??ˮ?Զ?????ˮ???ų???

????ϣ??Լ?˿յ????????ĵĽ????ܶ???????????????ע?????˽??????????Ѷ???????Щ???治???ף?????????ѯ???ǣ????ǻ???רҵ??ԱΪ????ġ?