【单选题】在静息状态下,人在寒冷环境中主要增加产热量的方式是( )。
【多选题】关于蛋白质性质的说法中,不正确的是 [ ]
A.
蛋白质溶液中加入任何盐溶液,都会使蛋白质发生变性
C.
微热条件下,任何蛋白质遇到浓硝酸时都会显黄色
【单选题】某同学利用化学知识对人们生活中的某些做法进评价,他的判断和解释都正确的是 ( ) 常见做法 判断及解释
C.
用热碱水(碳酸钠溶液)刷碗 正确,纯碱是强碱,有利于油脂的水解
D.
用自来水养金鱼时,先将水在阳光下暴晒一段时间再注入鱼缸 正确,光照能使次氯酸分解
【单选题】Rabies is an ordinarily infectious disease of the central nervous system, caused by a virus and, as a rule, spread chiefly by domestic dogs and wild flesh-eating animals. Man and all warm-blooded anim...
A.
a disease which is infectious, caused by virus of dogs and wild flesh-eating animals
B.
a disease caused by evil spirits
C.
a disease spread by man and all warm-blooded animals
D.
a disease causes animals to be vicious and violent
【单选题】在静息状态下,人在寒冷环境中主要增加产热量的方式是( )
【多选题】下列说法中,正确的是 [ ]
B.
加热会使蛋白质变性,因此吃生鸡蛋比吃熟鸡蛋好
【单选题】在静息状态下,人在寒冷环境中主要增加产热量的方式是
【单选题】Which of the following liquids can ordinarily be discharged overboard without being processed through an oily water separator?
D.
Cargo pump room bilges