根据供应链的研究对象及其范围,供应链可以分为().
A.企业供应链
B.商业供应链
C.产品供应链
D.基于供应链合作伙伴关系的供应链
参考答案:A, C, D
Last year four private schools _____ in the city.[ ]
A. has set up
B. set up
C. were set up
卡氏肺孢子虫肺炎治疗应选择()
A.螺旋霉素
B.膦甲酸钠
C.喷他脒
D.氟康唑
E.干扰素