【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】装置停车后,进行安全处理的主要步骤有()。
【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】The pacemaker for the heart is ordinarily the
C.
atrioventricular bundle (of His)
E.
membranous interventricular septum
【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