某药材属于茎类中药,其原植物为木本植物,三基原。药材呈圆柱形,常稍扭曲;表面灰棕色,外皮粗糙,具突起皮孔;节膨大;体轻,质坚实;断面不整齐,皮部黄棕色,木部黄白色,射线呈放射状排列,髓小或有时中空,黄白色;气微,味微苦而涩。该药材来源于()
A. 毛茛科
B. 木通科
C. 豆科
D. 五加科
E. 木兰科
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You work as the enterprise exchange administrator at Xxx .Xxx is using Microsoft Exchange Server 2010 as their messaging solution.What action must you take to restrict the amount of data in a particular public folder only without impacting on the other public folders?()
A. You must use the equipment mailbox.
B. You must use the Mail Flow Troubleshooter.
C. You must use the Public Folder Management Console.
D. You must use the Exchange Server Jetstress 2010.
第五套人民币10元纸币的票面长度为()毫米。
A. 140
B. 145
C. 150
D. 155
晶体管要正常工作必须有过压、过流保护装置。
A. 正确
B. 错误