()是保证人体健康的基石之一。 ["A.合理膳食","B.充足睡眠","C.心理平衡","D.戒烟限酒"]
下面关于蒙田表达不正确的一项是:() ["A、坚持美是客观的","B、法国人文主义思想家","C、提出美是主观的","D、热情地赞扬美"]
当被测压力很稳定时,被测压力正常值应在压力表测量范围的()处。 ["1/2","1/4","2/3","3/4"]
为了保护压力表,当被测压力经常变动时,其正常值应在压力计测量范围的()处。 ["1/2","1/4","2/3","3/4"]
紫外光谱中,能量最小的跃迁是()
下面哪一部著作是乔托的:()