单项选择题
A.24400㎜ B.25400㎜ C.26400㎜ D.27400㎜
A.31130㎜ B.32130㎜ C.33130㎜ D.34130㎜
A.1~2Kpa B.2~3Kpa C.3~4Kpa D.4~5Kpa