《招标投标法实施条例》规定,潜在投标人或者其他利害关系人对招标文件有异议的,应当在投标截止时间()d前提出。
A.10
B.15
C.21
D.30
参考答案:A
Operations which left patients ______ and in need of long periods of discovery time now leave them feeling relaxed and comfortable.
A.exhausted
B.unhealthy
C.upset
D.fearful
二级处理过程可以去除大于()的BOD,及悬浮固体物质。
A.80%
B.85%
C.90%
D.95%