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【简答题】
某企业12月初结存材料的成本差异为20万元，月初结存材料的计划成本80万元，月初结存材料的实际成本100万元，则该企业12月份的材料成本差异率为（ ）。
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【单选题】在这样一个科技昌明的时代,人们很容易把科学的作用放大到无穷,以致认为科学无所不能,认为科学是这个世界所有问题唯一解决的方案,科学成为包治百病的灵丹妙药,成为一个无所不能的标签,一个无所不含的形容词。这段文字的意思是在强调:
A.
人们开始尊重科学
B.
人们误解了科学作用
C.
科学深深地影响了人们
D.
科学的意义并不止于应用
【单选题】The_______is a crystal which, under pressure, produces an electric current which varies with the pressure
A.
alternator
B.
glass thermometer
C.
bourdon tube
D.
piezoelectric pressure transducer
【单选题】Working under the new expert who always encourages creativity in young people, we have been ______ with better ideas in test design.
A.
coming down
B.
coming out
C.
coming along
D.
coming up
【简答题】计算机是高科技的产物，它无所不能，因此人们不必编制程序，计算机也会按人的要求工作。（ ）
【单选题】Public speaking is well known to the average people because ______.
A.
most of them have been trained as public speakers
B.
such activities are prevalent in the society
C.
most of them have to do it when they study at college
D.
the passage does not mention the reason
【单选题】Under current circumstances, people in the country do the following EXCEPT______.
A.
put savings into tangible assets
B.
buy cars and jewelers
C.
plant maize in the back yard
D.
buy houses and land
【单选题】Which type of current is dominant for a pn junction under reverse bias?
A.
Diffusion current
B.
Drift current
C.
Leakage
D.
N/A
【单选题】Under the current education system, the fate of students is decided by ______.
A.
education
B.
institutions
C.
examinations
D.
students themselves
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