【简答题】旅游活动的发展,大体经历了三个发展阶段,即古代旅游阶段、近代旅游阶段和_______。
【单选题】I hereby declare that my vessel has a ()15 400 metric tons.
【单选题】If the IMF members' borrowing needs are larger than its forward commitment capacity, the IMF will ______.
A.
call for new quotas from its members
B.
call for New Arrangements to Borrow
C.
sell gold to finance excessive needs
【判断题】( )旅游活动的发展大体经历了三个发展阶段,即古代旅游阶段、近代旅游阶段和现代旅游阶段。
【单选题】Text Senility refers to great losses of intellectual capacity that occurs in old age and is【C1】______with the wide- spread loss of nerve cells and the【C2】______of brain tissue. Senility is a great dec...
【单选题】细菌经紫外线照射会发生DNA损伤,为修复这种损伤,细菌合成DNA修复酶的基因表达增强,这现象称为
【判断题】光源色照射不到物体的部分即是暗面。这部分的色彩主要是环境色、固有色和暗色的混合,但色彩的明度和纯度都低于反光面。暗面的色彩与环境色联系密切,环境色的色感越强,暗面固有色的色感就越弱;环境色的色感越弱,暗面固有色的色感就越突出。