【单选题】遗传值可以剖分为三个部分,其中由基因的加性效应造成的,能够真实遗传的值称为( )。
【单选题】脑挫裂伤的病人要严密观察病情变化,应从以下方面观察:
【单选题】If I________with her last summer,I________with her now. [ ]
A.
worked;am getting on very well
B.
had worked;would get on very well
C.
had worked;would have got on very well
D.
had worked;will get on very well
【判断题】凡未按上述规定办理大型物件托运或运单填写不明确,由此发生运输事故的,由托运人承担全部责任。
【判断题】确定检索词后,对有主题词检索途径的数据库尽可能选主题词检索。