老年人体温降低与哪项无关()
A.术前肌注阿托品
B.术中低温
C.基础代谢率降低
D.对寒冷的缩血管反应降低
E.术中大量输血
参考答案:A
劳动经济学主要有()的研究方法
A.劳动力市场
B.劳动科学
C、劳动供给
D.实证
E.规范
We're going to the bookstore in John's car. You can come with us _____ you can meet us there later. [ ]
A. but
B. and
C. or
D. then