【单选题】The human body can tolerate only a small range of temperature, especially when the per- son is engaged in vigorous activity. Heat reac- tions usually occur when large amounts of water and/or salt are ...
B.
have no salt in their bodies.
D.
have frequent fainting spells.
【单选题】最新的研究表明:一氧化氮吸入治疗法可以快速改善SARS重症患者的缺氧状况,缓解病情。病毒学研究同时证实,一氧化氮对SARS病毒有直接抑制作用。下列关于一氧化氮的叙述正确的是( )
C.
NO可以由N 2 和O 2 直接加热化合制得
【单选题】The human body can tolerate only a small range of temperature, especially when the per- son is engaged in vigorous activity. Heat reac- tions usually occur when large amounts of water and/or salt are ...