皮皮学，免费搜题
登录
搜题
【单选题】
馒性钝痛不宜用于吗啡治疗的主要原因是( )A.
对钝痛疗效差
B.
可引起呕吐
C.
可引起直立性低血压
D.
治疗量即抑制呼吸
E.
久用易成瘾
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】My father _________ Beijing many times. He _________ there again last week.
A.
has been to; has gone
B.
has gone to; went
C.
has been in; has gone
D.
has been to; went
【单选题】My father _____ to America. He _____ there three months ago. [ ]
A.
went; has been
B.
has been; has gone
C.
has gone; went
D.
has went; went
【单选题】My father _________to South Hill．He______ there for 5 days．
A.
has gone：has been
B.
has been; has gone
C.
has gone；has gone
D.
has been；has been
【单选题】抽样调查法，是指从研究对象的全部单位中抽取一部分进行考察和分析，并用这部分的数量特征去推断总体的数量特征的一种调查方法，有随机抽样和非随机抽样两种。下列属于非随机抽样形式的是（）。
A.
等距抽样
B.
整群抽样
C.
判断抽样
D.
分层抽样
【单选题】My father______ Australia for a year. And he enjoys staying there.
A.
has been in
B.
has been to
C.
has gone to
D.
went to
【单选题】关于SCA板的描述不正确的有()。
A.
SCA板不处理监控信息
B.
SCA可以完成OSC信道的接入和解出
C.
没有信号输入时，SCA板会上报告警
D.
SCA可以用在OLA站和OTM站
相关题目：
参考解析：
知识点：
题目纠错 0
发布
