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【单选题】
关于疏松结缔组织的特征,错误的是A.
细胞分布于细胞外基质中，无极性
B.
细胞外基质中含有纤维
C.
基质不形成分子筛
D.
来源于胚胎时期的间
E.
细胞数量少，种类多
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【简答题】A sample solution may contain any or all of the following ions: and . No precipitate formed when an aqueous solution of sodium chloride or sodium sulfate was added to the sample solution. A precipitat...
【单选题】Categories of U.S. consumer spending, ranked from largest to smallest, are
A.
housing, food & beverages, education & communication, and transportation.
B.
education & communication, housing, food & beverages, and transportation.
C.
food & beverages, housing, transportation, and medical care.
D.
housing, transportation, food & beverages, and medical care.
【单选题】The formation of a white precipitate when adding a solution of silver nitrate to a dissolved sample indicates the presence of ( ).
A.
nitrate
B.
sulfide
C.
chloride
D.
Sulfate
【单选题】方便面是一种只用开水一冲就能食用的快餐食品,它以不需烹调并且味道鲜美可 口而深受消费者欢迎。正是这一创新,使发明方便面的日本一家小企业一跃成为食品行业的明星。许多企业触类旁通,沿着这一思路,开发出以“方便”为特点的方 便米饭、方便米粉、方便蔬菜、方便啤酒、方便饮料等新食品。请问这种创新运用了哪种扩散思维?( )
A.
思路扩散
B.
原理扩散
C.
技术扩散
D.
功能扩散
【单选题】Which of the following categories generally has a deficit for the U.S.?
A.
Investment income
B.
Unilateral transfers
C.
Services
D.
Balance of payments
【判断题】H e was almost at the end of his tether when he stumbled on the solution of his difficulty. In the sentence, a metaphor is applied.
A.
正确
B.
错误
【判断题】The volume of core deposits at U.S. banks has been growing in recent years relative to other categories of deposits.
A.
正确
B.
错误
【单选题】According to the passage, schools scored by U.S. News & World Report fall into_____ categories.
A.
6
B.
5
C.
8
D.
7
【简答题】Use mathematical induction to show that when n is an exact power of 2 , the solution of the recurrence
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