【单选题】You describe something as ______ when it is extremely beautiful in appearance or it is very pleasant or satisfying.
【单选题】有关'首过消除'的叙述,正确的是
B.
首过消除强的药物,相同剂量下的血药浓度几乎没有个体差异
E.
药物口服经胃肠黏膜吸收,及第一次随门静脉血经肝时,部分被肝及胃肠黏膜中酶代谢转化,使进入体循环的量减少的现象
【简答题】四个量子数中,决定原子轨道形状的是______,决定原子轨道在空间伸展方向的是______。
【判断题】决定原子轨道形状的量子数是l和m。( )
【单选题】● The Internet is an open system, and most information is available to everyone. It is very important to add (74) to existing system for protecting the secret information. (74)
【单选题】关于首过消除叙述正确的是( )
B.
药物肌内注射吸收后,被肝药酶代谢,血中药物浓度下降
C.
药物口服后,被胃酸破坏,使吸收入血的药量减少
D.
药物口服后自肠系膜静脉和门脉首次经过肝脏而被代谢使进入体循环的药量减少