下列根茎类药材中薄壁组织含有间隙腺毛的是()
A.黄连
B.细辛
C.绵马贯众
D.狗脊
E.大黄
参考答案:C
分离单元废气的来源是()。
A.干燥器的再生
B.精馏塔的不凝气
C.加氢反应器的烧焦
D.停车后系统的排放
Complete information on weather broadcasts throughout the world is contained in().
A.Selected Worldwide Marine Weather Broadcasts
B.your local newspaper
C.the Notice to Mariners
D.the daily weather map