2、itallettersshowthattheassociatedlandmarkis_A___.海图图式用大写字母打印表示的相应的陆标是()a.conspicuous显著的 b.inconspicuous不显著的 c.agovernmentfacilityorstation政府设施或站点 d.aradiotransmitter无线电发射器3.linesonachartwhichconnectpointsofequalmagneticvariationarecalled_D__.海图上连接所有磁差相同的各点的线叫做()a.magneticlatitudes磁纬度 b