皮皮学,免费搜题
登录
logo - 刷刷题
搜题
【单选题】
吗啡结构中有()
A.
5个手性碳
B.
2个手性碳
C.
3个手性碳
D.
4个手性碳
E.
1个手性碳
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
微信内点击右上角“…”即可分享
反馈
参考答案:
举一反三
【简答题】all the time, It’s about time that, ahead of time, at any time, at the same time,
【单选题】It’s about time that this problem .
A.
to settle
B.
should be settled
C.
be settled
D.
to be settled
【单选题】It’s about time that he along well with his classma
A.
to get
B.
got
C.
have
D.
should
【单选题】It’s about time that people __ notice of what women did during the war.
A.
took
B.
take
C.
have taken
D.
will taken
【多选题】单向板肋梁楼盖按弹性理论计算时,对于板和次梁不论其支座是墙还是梁,均视为铰支座,由此引起的误差可在计算时所取的( )加以调整。
A.
跨度
B.
荷载
C.
弯矩值
D.
剪力值
【判断题】销的主要用途是固定零件之间的相互位置,并可传递不大的载荷。圆柱销经过多次装拆,其定位精度会降低。圆锥销的安装比圆柱销方便,多次安装对定位精度的影响也较小。
A.
正确
B.
错误
【单选题】It’s about time that he along well with his classmates.
A.
to get
B.
got
C.
have
D.
should
【单选题】It’s about time that the question _____ now.
A.
solved
B.
were solved
C.
be solved
D.
was solved
【单选题】塑料注射成型工艺是塑料制品一种重要的成型方法,以下说法中不正确的是 ( ) 。
A.
成型周期短
B.
能一次成型外形复杂的塑件
C.
所得塑件尺寸精确
D.
成型周期很长
【多选题】单向板肋梁楼盖按弹性理论计算时,对于板和次梁不论其支座是墙还是梁,均视为铰支座,由此引起的误差可在计算时所取的()加以调整。
A.
跨度
B.
荷载
C.
剪力值
D.
弯矩值
相关题目:
参考解析:
知识点:
题目纠错 0
发布
创建自己的小题库 - 刷刷题