【多选题】According to the speaker, what are the best descriptions of normal lectures at school?
B.
Interesting and rewarding.
【简答题】M受体兴奋可引起() A心脏兴奋 B胃肠平滑肌收缩 C膀胱逼尿肌舒张 D瞳孔扩大 E膀胱括约肌收缩
【简答题】M 受体兴奋可以引起心脏 ,瞳孔 ,胃肠道平滑 肌 ,腺体分泌 。
【单选题】What is the color code of the shelves where normal size novels are placed?
【单选题】根据阀瓣前后的压力差自动启闭,有严格的方向性,只许介质向一个方向流动,可阻止其逆向流动的阀门是( )。