【单选题】When navigating in high latitudes and using a chart based on a Lambert conformal projection , ______
A.
a straight line drawn on the chart approximates a great circle
B.
the chart should not be used outside of the standard parallels
C.
the course angle is measured at the mid-longitude of the track line
D.
distance cannot be measured directly from the chart
【单选题】中国共产党提出过渡时期的总路线和总任务是在
【简答题】呈不规则扁圆形,多有2-3个爪状分枝,上面有凸起的茎痕,表面灰白色或黄白色,有数圈同心环节和棕色点状须根痕,质坚硬,断面类白色,角质样。无臭,味苦,嚼之有粘性。此药材是( )A. 白及B. 黄连C. 知母D. 射干A. 1 B. 1 C. 1 D. 1
【单选题】呈不规则扁圆形,多有2-3个爪状分枝,上面有凸起的茎痕,表面灰白色或黄白色,有数圈同心环节和棕色点状须根痕,质坚硬,断面类白色,角质样。无臭,味苦,嚼之有粘性。此药材是:
【单选题】党在过渡时期总路线和总任务的正式提出是在 。