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【多选题】
在科学史上,首先成功地运用数学并使它自身完美化的科学是固体力学和天体力学。百年来,各门科学越来越广泛地应用数学。电子计算机在各门科学研究以及管理中得到日益广泛地应用,其作用越来越大。科学和技术越来越依靠数学,离不开数学,这是科学技术发展的必然趋势。这段话所包含的哲理是A.
任何事物都有质和量的规定性，是质和量的对立统一
B.
认识事物的质是认识事物的开始，是认识事物量的前提，而由质到量，则是对事物认识的深化。
C.
在科学研究中，确定事物及其运动状态的性质，是定性研究，而对其数量的分析，是定量研究。
D.
只有确定事物质的数量界限，对实践进行明确的的指导。
E.
由定性研究到定量研究的发展，是人类认识发展的规律，也是科学进步的规律。
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举一反三
【单选题】Insurance premiums do not become too high because ______.
A.
not many people insure themselves
B.
premiums depend on the risk of loss
C.
insurers have to be more competitive
D.
insurance companies can never lose money
【单选题】Which of the underlined expressions is more formal?
A.
We can give insurance companies incentives to focus more on taking care of the sick than on coming up with reasons to insure only the healthy.
B.
We can give insurance companies incentives to focus more on taking care of the sick than on coming up with rationales to insure only the healthy.
【简答题】计算动态电路初始条件时,一般分三步进行。第一步,画出0_的等效电路,计算电容上的 (电流/电压)或者电感上的 (电流/电压)。这时,电容应该视作 (开路/短路),电感应该视作 (开路/短路)。第二步,根据换路定律,等到0+时候的电压、电流值。第三步,画出0+的等效电路,根据需要求解各电压电流。这个时候,电容应该用 (电压源/电流源)来代替,电感应该用 (电压源/电流源)来代替。
【简答题】试画出压电式传感器与电荷放大器相连的等效电路图，并说明电荷放大器的输出电压“与传感器产生的电荷量q及电荷放大器反馈电容C之间的关系。
【单选题】163 Many companies self insure against some risk. Problems which can arise from self-insurance include:
A.
failure to reserve funds to handle worst case scenarios (low probability events) resulting in severe financial damage to the company
B.
stiff competition from insurance companies
C.
confusion of business risks with insurable risks.
D.
A and C
E.
All of the above
【单选题】45 Many companies self insure against some risk. Problems which can arise from self-insurance include:
A.
failure to reserve funds to handle worst case scenarios (low probability events) resulting in severe financial damage to the company
B.
stiff competition from insurance companies
C.
confusion of business risks with insurable risks.
D.
A and C
E.
All of the above
【简答题】试画出压电式传感器与电荷放大器相连的等效电路图，并说明电荷放大器的输出电压“与传感器产生的电荷量q及电荷放大器反馈电容C之间的关系。
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