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【单选题】
下列关于流体的说法正确的是（）A.
微弱扰动不能在不可压流体传播，否则它将瞬间传遍全部流场
B.
理想流体没有摩擦阻力、升力、边界层和有限音速
C.
不可压流体的不一定为零，散度一定为零
D.
理想流体沿物体表面的法向速度不为零
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A.
attribute
B.
distribute
C.
devote
D.
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【单选题】College sports in the United States are a huge deal. Almost all major American universities have football, baseball, basketball and hockey programs, and【C1】______millions of dollars each year to sport...
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【单选题】College sports in the United States are a huge deal. Almost all major American universities have football, baseball, basketball and hockey programs, and【71】millions of dollars each year to sports. Mos...
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distribute
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【单选题】College sports in the United States are a huge deal. Almost all major American universities have football, baseball, basketball and hockey programs, and (1)_____ millions of dollars each year to sport...
A.
attribute
B.
distribute
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devote
D.
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【单选题】Almost _of all American families are single parent families.
A.
10%
B.
20%
C.
15%
D.
25%
【单选题】College sports in the United States are a huge deal. Almost all major American universities have football, baseball, basketball and hockey programs, and 【21】______ millions of dollars each year to spo...
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attribute
B.
distribute
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devote
D.
attach
【多选题】景区讲解员在进行本景区导游讲解中应注意的问题主要有,
A.
讲述民间传说要有故事来源的历史传承，不得胡乱编造
B.
使用文言文时应以大众化的语言进行补充解释
C.
导游的讲解内容应力避同音异义词造成的歧义
D.
讲解内容涉及的历史人物应以书本上的说法为据
E.
讲解内容如援引他人研究成果应予以适度说明
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