问答题 多工资类别的账套中，要为“合同工”这一类别增加工资项目“交通补贴”并设置公式，简述操作方法。

未知题型 Geologists (at) the Hawaiian Volcano Observatory (rely on) (a number of) instruments to (studying) the volcanoes in Hawaii.A.atB.rely onC.a number ofD.studying

未知题型 (As) secretary of transportation, he worked to help the (bankrupt railroads) in the northeastern (United States) (solved) their financial problems.A.AsB.bankrupt railroadsC.United StatesD.solved