1/42+1/56+1/72+1/90+1/110的值是______。
A:1/6 B:5/66 C:7/85 D:11/128
1/42+1/56+1/72+1/90+1/110的值是______。
A:1/6 B:5/66 C:7/85 D:11/128
1/42+1/56+1/72+1/90+1/110的值是______。
A:1/6 B:5/66 C:7/85 D:11/128
1/42+1/56+1/72+1/90+1/110的值是______。
A:1/6 B:5/66 C:7/85 D:11/128
1/42+1/56+1/72+1/90+1/110的值是______。
A:1/6 B:5/66 C:7/85 D:11/128
油田井控考试试题十三
