皮皮学，免费搜题
登录
搜题
【单选题】
大黄素型的蒽醌类化合物,多显黄色,其羟基分布情况是
A.
分布在两侧的苯环上
B.
分布在一侧的苯环上
C.
分布在1,2位上
D.
分布在1,4位上
E.
分布在1,8位上
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
.
..
皮皮学刷刷变学霸
举一反三
【单选题】在生活中看到的蜂巢是通常属于什么构成形式?
A.
近似
B.
重复
C.
特异
D.
渐变
查看完整题目与答案
【单选题】根据国际航运惯例，当托运人口头或通过函电向船公司或其代理人预订船舱后，（）提交托运单。
A.
需要
B.
不需要
C.
递交其他单证
D.
递交装货单
查看完整题目与答案
【单选题】why didn't steven travel to visit his mother?
A.
he was busy
B.
he was free
C.
he bought a mobile phone to call her
D.
he was unemployed
查看完整题目与答案
【单选题】—Why didn’t you finish the task?      —I didn’t think it is ________ the effort.
A.
worthwhile
B.
deserving
C.
valuable
D.
worth
查看完整题目与答案
【单选题】She wanted to know  ________ [     ]
A.
why didn't I think it was a good idea
B.
why I didn't think it was a good idea
C.
why I thought it wasn't a good idea
D.
why did I think it wasn't a good idea
查看完整题目与答案
【判断题】yield()方法和sleep()方法相同,都可以让当前正在运行的线程暂停。
A.
正确
B.
错误
查看完整题目与答案
【简答题】Why didn’t the man pass the exam?
查看完整题目与答案
【单选题】The mason ______ I didn't do this exercise is I didn't know how to do it.
A.
why...because
B.
why...that
C.
for...that
D.
that...because
查看完整题目与答案
【单选题】( ) see the film this evening?
A.
Why don't we go to
B.
Why didn't we go to
C.
Why aren't we go to
查看完整题目与答案
【单选题】—Why didn't Alice come to the party last night? —I don't know ______. [     ]
A.
why didn't she
B.
why she didn't
C.
why did she
D.
why she did
查看完整题目与答案
相关题目：
【单选题】在生活中看到的蜂巢是通常属于什么构成形式?
A.
近似
B.
重复
C.
特异
D.
渐变
查看完整题目与答案
【单选题】根据国际航运惯例，当托运人口头或通过函电向船公司或其代理人预订船舱后，（）提交托运单。
A.
需要
B.
不需要
C.
递交其他单证
D.
递交装货单
查看完整题目与答案
【单选题】why didn't steven travel to visit his mother?
A.
he was busy
B.
he was free
C.
he bought a mobile phone to call her
D.
he was unemployed
查看完整题目与答案
【单选题】—Why didn’t you finish the task?      —I didn’t think it is ________ the effort.
A.
worthwhile
B.
deserving
C.
valuable
D.
worth
查看完整题目与答案
【单选题】She wanted to know  ________ [     ]
A.
why didn't I think it was a good idea
B.
why I didn't think it was a good idea
C.
why I thought it wasn't a good idea
D.
why did I think it wasn't a good idea
查看完整题目与答案
【判断题】yield()方法和sleep()方法相同,都可以让当前正在运行的线程暂停。
A.
正确
B.
错误
查看完整题目与答案
【简答题】Why didn’t the man pass the exam?
查看完整题目与答案
【单选题】The mason ______ I didn't do this exercise is I didn't know how to do it.
A.
why...because
B.
why...that
C.
for...that
D.
that...because
查看完整题目与答案
【单选题】( ) see the film this evening?
A.
Why don't we go to
B.
Why didn't we go to
C.
Why aren't we go to
查看完整题目与答案
【单选题】—Why didn't Alice come to the party last night? —I don't know ______. [     ]
A.
why didn't she
B.
why she didn't
C.
why did she
D.
why she did
查看完整题目与答案