【单选题】You describe something as ______ when it is extremely beautiful in appearance or it is very pleasant or satisfying.
【单选题】首关(首过)消除是指
A.
药物经肾脏时被排泄使进入体循环的药量减少;
C.
药物口服时被胃肠及肝脏破坏,使进入体循环的药量减少;
D.
药物与血浆蛋白结合后游离浓度下降药物口服时被胃肠及肝脏破坏,使进入体循环的药量减少;
【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
【单选题】首关(首过)消除是指
D.
药物口服时被胃肠及肝脏破坏,使进入体循环的药量减少