烤烟同一叶片烟碱含量,自叶基到叶尖:烟碱含量逐渐();自支脉到主脉:烟碱含量逐渐()。
参考答案:增加;减少
试述门脉高压症手术麻醉方法的选择。
Welcome our home. a seat , please. [ ]
A. in , Get
B. to , Have
C. at , Give
D. for, Take