路基(土、石方)施工涵盖开挖路堑、()、修建防护工程等内容。
A.整平路基
B.填筑路堤
C.压实路基
D.修整路床
E.洒透层油
参考答案:A, B, C, D
---How long did you spend going through the jungle during the exciting vacation?
---Going through the jungle _____us about three weeks.
A.spent
B.used
C.paid
D.took
医疗保健机构为孕产妇提供的传染病筛查服务项目不包括()。
A、艾滋病
B、梅毒
C、丙肝
D、乙肝