皮皮学，免费搜题
登录
搜题
【单选题】
流行病学的观察性研究 不包括A.
对 列研究
B.
病例对照研究
C.
临床试验
D.
现况调查
E.
生态学研究
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】下列关于水下混凝土灌注的说法，错误的是( )。
A.
地下连续墙的混凝土是在护壁泥浆下灌注，须按水下混凝土的方法配制和灌注
B.
水泥宜选用普通硅酸盐水泥或矿渣硅酸盐水泥，并可根据需要掺加外加剂，其品种和数量应通过试验确定
C.
导管使用前应试拼试压，试压压力一般为0.6～1.0MPa
D.
灌注混凝土的隔水栓宜用预制混凝土塞、钢板塞、木板塞等材料制成
【单选题】An offer was made by A to sell goods on the 1st April for £2,000. B the offeree telephoned A on the 5th April offering to pay £1,800 for the goods.On the 8th April, A offered to sell the goods to C fo...
A.
There is a contract between A and B created on the 7th April
B.
There is a contract between A and B created on the 10th April
C.
There is a contract between A and C
D.
There is no contract created
【简答题】根据C源性质,可以把微生物分为()和()两种类型。
【单选题】An old friend from abroad, ____ I was expecting to stay with, telephoned me from the airport.
A.
that
B.
whom
C.
who
D.
which
相关题目：
参考解析：
知识点：
题目纠错 0
发布
