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听力原文:W: Morning, Mr. Park. M: Come here, Miss Li, I have something to talk to you. W: What's the problem, Mr. Park? M: We need to define a new strategy which must be flexible enough to take account of changing market conditions. W: I agree. Our main objective must be to gain market share, and to do this we must reduce prices. M: So you are sure that if we reduce prices, our market share will increase? W: Yes, I'm sure. M: That might be true. But if we reduce our prices, our margins will be lower and that will cut our profits. W: In short term it is right. But we can slowly increase our production and as the production is increased, we may cut unit cost. M: That's really a log-term prospect. But I believe higher profitability is our objective. The better the products, the higher the price, and the higher price will enhance higher profits. W: The market is already very competitive. And if we raise our prices, whatever the quality, sales will drop rapidly. M: Then shall we look at it from the other viewpoint--manufacturing. Well, if we can reduce cost in manufacturing that must put us in a strong position to adapt to the market. The only way for us is to sub-contract more of the production. W: That will mean job losses if we do that. M: That's true. But the jobs that remain will be more secure. W: It sounds reasonable. Maybe we can try this way. M: That's the best we can do, don't you agree? (23)
A.
Market share
B.
Company strategy
C.
High profitability
D.
Manufacturing
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【判断题】在相同的测量条件下的偶然误差测量值序列中数值、符号不定,但又服从于一定统计规律。( )
A.
正确
B.
错误
【简答题】偶然误差是指在相同的测量条件下的测量值序列中数值的 符号 ( ),但又服从于一定统计规律的测量误差。
【单选题】关于随机误差,以下说法正确的是
A.
随机误差服从一定的统计规律,它一般具有单峰性、对称性、抵偿性,可以通过多测测量减小它。
B.
随机误差就是随机的,完全没有规律。
C.
随机误差不可以减小。
D.
以上说法都不对。
【单选题】关于以下气体临界状态的说法()是错误的。
A.
气体能够液化的的最高温度叫气体的临畀温度
B.
某气体的临畀温度、临畀压力、临界密度都有固定的数值
C.
气体的临畀温度越高,气体越容易液化
D.
气体处于临界状态时,气相、液相仍有明显的差别
【单选题】原发性肾病综合征最常见的并发症是:
A.
急性循环充血
B.
高血压脑病
C.
肾功能衰竭
D.
感染
【单选题】以下( )的气液相温差最大
A.
实沸点蒸馏
B.
平衡气化
C.
恩氏蒸馏
【单选题】原发性肾病综合征最常见的合并症是:
A.
感染
B.
休克
C.
血栓形成
D.
电解质紊乱
【单选题】原发性肾病综合征最常见的并发症是()
A.
低钠血症
B.
感染
C.
高凝状态
D.
低血容量休克
E.
低钙血症
【多选题】按性质分类的误差,表述正确的是:
A.
随机 误差的绝对值和符号保持不变,当测量条件改变时误差服从某种函数关系。
B.
系统误差的来源包括由仪表引入的系统误差、 理论误差和人为误差。
C.
系统误差的特点是每次测量值偏大或偏小不定,服从一定的统计规律。
D.
由于仪表产生故障或重大外界干扰而引起的显著偏离实际值的误差,称为 粗大误差。
【单选题】下面关于随机误差的说法,不正确的是()
A.
随机误差可通过多次测量,取平均值来消除
B.
随机误差数值大小和性质都不固定
C.
随机误差其总体服从一定的统计规律
D.
随机误差的产生是由某些无法控制的因素产生的
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