培根认为,读书为学的用途是装饰、娱乐和增长才识。()
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基辛格认为中俄经济改革成果差异在于俄国没有类似中国的这样一批海外俄商。()
If a refrigeration compressor is running continuously without lowering the temperature in
A. a shortage of compressor oil
B. warm food in the refrigerator
C. excessive condenser cooling water
D. a shortage of refrigerant
1964年我国还清了前苏联的全部债务。()
参考答案:错误