在开标时,若招标人设有标底的,应当采用保密原则予以保密。 ( )
参考答案:错
解析:[简析] 招标人设有标底的,应当在开标时当场公布并记录备案。
In the future,cars won’t be ______,and it’ll be _____ to travel everywhere by plane.
A,cheap, expensive B. expensive ,expensive
C. cheap , cheap D. expensive,cheap
缺铁性贫血病因中铁摄入减少的因素有()
A.饮食不足
B.痔疮
C.钩虫病
D.消化性溃疡
E.妊娠