The （） will have a rotating honorary chairman. ["Board of Directors","Boards of Director","boards of director","Board Director"]
下列短语都是定中短语的一组是（）。 ["学习外语、采购一箱","一百人次、学习先进","跑了一里、跑了三趟","教室里面、长江以南"]
公路山岭隧道的常用施工方法有：（） ["盾构法","沉埋法","矿山法","新奥法","掘进机法"]
简述匀墨、着墨、积墨系数的表达形式。
