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【多选题】
以下鉴别方法属于化学鉴别法的是
A.
大供试品和对照品具有相同的保留时间
B.
阿司匹林在碳酸钠中水解产生醋酸臭气
C.
苯甲酸加三氯化铁试液显赭色沉淀
D.
盐酸氯丙嗪在254nm处有最大吸收
E.
氨茶碱供试品和对照品具有相同的比移值
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参考答案:
举一反三
【简答题】List the domestic environment uncontrollable elements found in the model that describes the international marketing task.
【单选题】接第(6)题 直径 10 和 20 的同心圆中心线绘制结束后,可下达复制命令绘制右上角的中心线。下达复制命令后,步骤过程是:“ (1) 选择对象;(2)指定基点或位移,或者 [重复(M)] ” 选择正确的步骤:
A.
选择两条中心线,回车; 捕捉中心线的交点后输入@25,20
B.
选择两条中心线; 捕捉中心线的交点
C.
选择两条中心线; 捕捉中心线的交点后输入@25,20
D.
选择两条中心线; 捕捉中心线的交点后输入25,20
【单选题】复制命令是指( ),
A.
把所选的文字和图形复制到剪贴板上
B.
把剪贴板中的内容复制到插入点
C.
在插入点复制所选的文字和图形
D.
把块中的内容复制到插入点
【单选题】Which of the following is likely to be part of the general environment of a firm rather than its task environment?
A.
A new competitor enters the market, forcing the management to revise its pricing.
B.
The firm’s top supplier goes out of business, resulting in higher raw materials costs.
C.
The employees of the company begin to unionize aggressively, forcing the management to revise pay structures.
D.
A worldwide recession brings about a change in the firm’s marketing strategies.
【单选题】决定生命的遗传特性,指挥细胞进行DNA复制的“司令部”是指细胞中的______。
A.
细胞质
B.
细胞核
C.
核糖核蛋白体
D.
高尔基体
【判断题】A product structure lets divisional managers respond quickly and appropriately to the changing task environment.
A.
正确
B.
错误
【判断题】The United Nations Declaration of The Human Environment in 1972 in Stockholm declares 26 principles concerning the preservation and enhancement of the human environment. Among them, Principle 17 decla...
A.
正确
B.
错误
【判断题】Read through this passage in reading 1 again, and finish the task: 1. The elderly lady at the store admitted that her generation didn’t have the awareness of saving the environment.
A.
正确
B.
错误
【单选题】What is the term for the application of cultural knowledge to the task of living in an environment?
A.
real culture
B.
ideal culture
C.
cultural transmission
D.
technology
【多选题】水泥砂浆常用的比例有()
A.
1:1
B.
1:2
C.
1:3
D.
1:2.5
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