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【单选题】
可逆反应2A(g)+3B(g) 3C(g)在一定条件下,使一定量的A气体和B气体发生反应,达到平衡状态时,具有的性质是(   )
A.
各物质的浓度之比c(A)∶c(B)∶c(C)=2∶3∶3
B.
平衡混合物的体积是反应开始时的35
C.
平衡混合物中各物质的浓度相等
D.
单位时间内,若消耗了a mol A物质,同时也消耗了1.5a mol C物质
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举一反三
【单选题】革兰氏阴性 菌细胞壁含有特殊成分
A.
肽聚糖
B.
异染颗粒
C.
脂多糖
D.
磷壁酸
【单选题】Task 2 Directions: This task is the same as Task 1.The 5 questions or unfinished statements are numbered 41 to 45. Welcome to our small business set-up guide, providing all the information you need to...
A.
cope with an economic crisis
B.
start a new small busincess
C.
raise funds for a new firm
D.
build up public relations
【单选题】革兰氏阴性菌细胞壁中不含有()
A.
肽聚糖
B.
脂多糖
C.
脂蛋白
D.
磷壁酸
【多选题】多媒体计算机可以处理( )等媒体的信息,可以把这些信息转换成数字信号并进行编辑和修改。
A.
文字
B.
图形
C.
图像
D.
声音
E.
动画和电影
【判断题】多媒体计算机可以处理文字、图形、图像、声音、动画和电影等媒体的信息。
A.
正确
B.
错误
【简答题】Welcome to our small business set-up guide, providing all the information you need to start your business on a healthy, solid basis. From choosing the right name for you company and your first ...
【简答题】Welcome to our small business set-up guide, providing all the information you need to start your business on a healthy, solid basis. From choosing the right name for your company and your first...
【多选题】多媒体计算机可以处理( )等媒体的信息,可以把这些信息转换成数字信号并进行编辑和修改。
A.
文字
B.
图形
C.
图像
D.
声音
【简答题】Task 2 Directions: This task is the same as Task 1. The 5 questions or unfinished statements are numbered 41 to 45. Welcome to our small business set-up guide, providing all the information you need t...
【简答题】Welcome to our small business set-up guide, providing all the information you need to start your business on a healthy, solid basis. Form choosing the right name for your company and your first...
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