皮皮学，免费搜题
登录
搜题
【单选题】
听力原文： Nairobi. Five United Nations aid workers released by Somali gunmen have arrived in Kenya. The former hostages say they are in good health. The aid workers were kidnapped Tuesday during an attack against the headquarters of the group 'Doctors without Borders' in Mogadishu. At least 14 people died in the attack. The gunmen are followers of a local leader Musa Su Yallhal. He opposes the temporary Somali government. The gunmen are still believed to be holding four more United Nations workers. The UN says it is holding talks with the Yallhal group. Q: When were the UN aid workers kidnapped? (20)A.
On Saturday.
B.
On Monday.
C.
On Tuesday.
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
【简答题】人工材料防渗体坝的防渗体采用________________、________________、________________、________________或其他人工材料组成。
【单选题】用铈量法测定盐酸盐酸氯丙嗪步骤如下：检品适量，溶于稀硫酸后立即用硫酸铈滴定液（0.1mol/L）滴定至形成的红色消失。终点指示原理是（）
A.
硫酸铈与盐酸氯丙嗪形成配合物
B.
硫酸铈被氧化
C.
盐酸氯丙嗪溶于稀硫酸立即显红色，与硫酸铈反应后红色消失
D.
盐酸氯丙嗪被还原
E.
分步氧化：盐酸氯丙嗪分子在滴定过程中先失去一个电子形成红色的自由基，到达等当点时，全部氯丙嗪分子失去两个电子，红色消失。
【简答题】创新精神的主要来源?
【单选题】Taking into _________ our long standing business relations with you, we accept _________by D/P:
A.
considering, enquiries
B.
consideration, invitations
C.
considering, installment
D.
consideration, payment
【单选题】在六个基本视图中,反映物体前后关系的视图有 ( )
A.
左视图、仰视图、右视图、后视图
B.
主视图、左视图、仰视图、后视图
C.
仰视图、左视图、主视图、右视图
D.
俯视图、左视图、仰视图、右视图
【单选题】在六个基本视图中，反映物体前后关系的视图有（）
A.
主视图、左视图、仰视图、后视图
B.
俯视图、左视图、仰视图、右视图
C.
左视图、仰视图、右视图、后视图
D.
仰视图、左视图、主视图、右视图
相关题目：
参考解析：
知识点：
题目纠错 0
发布
