常用的根号表平方立方表
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3 实用的平方根表立方根表平方表立方表平方根立方根12=1 13=1 √1=1 √1 = 1 22=4 23=8 √2=1.414 √2 = 1.260 32=9 33=27 √3=1.732 √3 = 1.442 42=16 43=64 √4=2 √4 = 1.587 52=25 53=125 √5=2.236 √5 = 1.710 62=36 63=216 √6=2.449 √6 = 1.817 72=49 73=343 √7=2.646 √7 = 1.913 82=64 83=512 √8=2.828 √8 = 2 92=81 93=729 √9=3 √9 = 2.080 102=100 103=1000 √10=3.162 √10 = 2.154 112=121 113=1331 √11 = 3.317 √11 = 2.224 122=144 123=1728 √12 = 3.464 √12 = 2.289 132=169 133=2197 √13 = 3.606 √13 = 2.351 142=196 143=2744 √14 = 3.742 √14 = 2.410 152=225 153=3375 √15 = 3.873 √15 = 2.466 162=256 163=4096 √16 = 4 √16 = 2.520 172=289 173=4913 √17 = 4.123 √17 = 2.571 182=324 183=5832 √18 = 4.243 √18 = 2.621 192=361 193=6859 √19 = 4.359 √19 = 2.668 202=400203=8000√20 = 4.472√20 = 2.7143√0 = 0(表示根号0等于0,下平方根表立方根表√1 = 1√2 = 1.414√3 = 1.732√4 = 2√5 = 2.236√6 = 2.449√7 = 2.646√8 = 2.828√9 = 3√10 = 3.162√11 = 3.317√12 = 3.464√13 = 3.606√14 = 3.742√15 = 3.873√16 = 4√17 = 4.123√18 = 4.243√19 = 4.359√20 = 4.472其中专业理论知识内容包括:保安理论知识、消防业务知识、职业道德、法律常识、保安礼仪、救护知识。