2018401.51ABCD2A10~20B20~30C30~40D40~503A50~70B40~50C60~80D20~304ABCD5A45~60B20~30C40~50D60~706ABCD7ABCD8ABCD9ABCD10ABCD11ABC20~30D12A3~6B1~2C2~3D1013ABCD14ABCD15.ABCDE16.ABCDE17.ABCDE18.ABCDE19.ABCDE.20.A------------------B----------C------D--E------------21.A5-6cmBCD22.ABCDE23.ABCD24.A5minB10-20minC20-30minD60min25.ABCD26.ABCDE27.ABCDE28.ABCDE29.ABCDE30.ABCDE31.ABCD32.ABCDE33.A8BCD34.AB,CD35.,ABCD36.()A3740B3842C3740D374237.ABCDE38.()ABCDE39.:()AB5070,3740,,C1520D40.()A0.5~1B12C1.5~2D2~310411.ABCDE2.ABCDE3.ABCDE4.ABCD5.ABCD6.ABCD7.ABCD8.,:A,,BCD,9.,:A,BC,,D10.ABCD