皮皮学，免费搜题
登录
搜题
【判断题】
为提高水泥浆顶替钻井液效率，改善水泥环质量，在钻井液与水泥浆之间注入一段“液体”，这种特殊的液体称为水泥浆的前置液。A.
正确
B.
错误
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】People in the 1th and 1th centuries slept about . hours a night because ______.
A.
they were forced by their parents to do so
B.
they knew what was best for their health
C.
they had to do so because of their life style. and the lack of electricity
D.
they were not so dynamic and ambitious as modem people are
【单选题】Where is the man going?
A.
He's going to a post office.
B.
He's going to school.
C.
He's going home.
【单选题】流行病学科的三大要素是指:
A.
描述分布、提出假设、验证假设
B.
原理、方法、应用
C.
揭示现象、找出原因、提供措施
D.
描述、分析、验证
E.
疾病、伤害、健康
【简答题】Sometimes it is difficult to compare money values in different periods of history because______.
【简答题】病害流行的三要素是指( )、( )、( )。
【单选题】Both approaches require that the actor ______ his or her own personal values as well as the character's.
A.
must understand
B.
should understand
C.
has to understand
D.
need to understand
相关题目：
参考解析：
知识点：
题目纠错 0
发布
