皮皮学，免费搜题
登录
搜题
【单选题】
下列关于缓聚和阻聚描述正确的是( )。 I. 在某段时间内,缓聚只能终止一部分自由基,阻聚却能终止所有的自由基; II. 缓聚只能使动力学曲线斜率变小,阻聚却能使动力学曲线斜率变大;III.缓聚不会使诱导期发生变化,阻聚会使诱导期变长;IV.两者本质相同,转移反应,但程度上有区别; V.同一物质在同一聚合体系中,要么起阻聚作用,要么起缓聚作用,不能既阻聚又缓聚。
A.
II、III、IV
B.
I、III、V
C.
I、III、IV
D.
II、III、V
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】—Thank you for your help. —______ [      ]
A.
I am OK .
B.
You are welcome .
C.
Yes,you are right .
D.
Thanks .
查看完整题目与答案
【单选题】Don't just wait for other's help. God help those who help . [     ]
A.
him
B.
you
C.
them
D.
themselves
查看完整题目与答案
【单选题】—Thank you your great help.  —You are .
A.
for;welcome
B.
to;right
C.
of;great
D.
of;right
查看完整题目与答案
【单选题】大隐静脉曲张病人在下列哪种情况下不可进行手术治疗
A.
患肢皮肤湿疹
B.
小腿慢性溃疡
C.
交通支瓣膜功能不全
D.
大隐静脉瓣膜功能不全
E.
患肢深静脉回流不佳
查看完整题目与答案
【单选题】大隐静脉曲张病人在下列哪种情况下不可进行手术治疗
A.
小腿慢性溃疡
B.
患肢皮肤湿疹
C.
患肢深静脉回流不佳
D.
大隐静脉瓣膜功能不全
E.
交通支瓣膜功能不全
查看完整题目与答案
【单选题】大隐静脉曲张病人在下列哪种情况下,不可进行手术治疗
A.
小腿慢性溃疡
B.
患肢皮肤湿疹
C.
患肢深静脉堵塞
D.
大隐静脉瓣膜功能不全
E.
交通支瓣膜功能不全
查看完整题目与答案
【单选题】长沙地铁轨道线路直线标准轨距为( )mm。
A.
1425
B.
1435
C.
1445
D.
1455
查看完整题目与答案
【单选题】— Where is your sister, Dick? I need her help. — Dad, she in her room. Let me help you instead.
A.
sleeps
B.
is sleeping
C.
slept
D.
was sleeping
查看完整题目与答案
【单选题】Thank you very much for giving me so much help. --- (_______) .
A.
No thank you
B.
You’re welcome
C.
OK
D.
Thanks
查看完整题目与答案
【单选题】It was stupid ____ him for help. Everyone knows that he is very mean.
A.
you ask
B.
for you to ask
C.
of you to ask
D.
of you asking
查看完整题目与答案
相关题目：
【单选题】—Thank you for your help. —______ [      ]
A.
I am OK .
B.
You are welcome .
C.
Yes,you are right .
D.
Thanks .
查看完整题目与答案
【单选题】Don't just wait for other's help. God help those who help . [     ]
A.
him
B.
you
C.
them
D.
themselves
查看完整题目与答案
【单选题】—Thank you your great help.  —You are .
A.
for;welcome
B.
to;right
C.
of;great
D.
of;right
查看完整题目与答案
【单选题】大隐静脉曲张病人在下列哪种情况下不可进行手术治疗
A.
患肢皮肤湿疹
B.
小腿慢性溃疡
C.
交通支瓣膜功能不全
D.
大隐静脉瓣膜功能不全
E.
患肢深静脉回流不佳
查看完整题目与答案
【单选题】大隐静脉曲张病人在下列哪种情况下不可进行手术治疗
A.
小腿慢性溃疡
B.
患肢皮肤湿疹
C.
患肢深静脉回流不佳
D.
大隐静脉瓣膜功能不全
E.
交通支瓣膜功能不全
查看完整题目与答案
【单选题】大隐静脉曲张病人在下列哪种情况下,不可进行手术治疗
A.
小腿慢性溃疡
B.
患肢皮肤湿疹
C.
患肢深静脉堵塞
D.
大隐静脉瓣膜功能不全
E.
交通支瓣膜功能不全
查看完整题目与答案
【单选题】长沙地铁轨道线路直线标准轨距为( )mm。
A.
1425
B.
1435
C.
1445
D.
1455
查看完整题目与答案
【单选题】— Where is your sister, Dick? I need her help. — Dad, she in her room. Let me help you instead.
A.
sleeps
B.
is sleeping
C.
slept
D.
was sleeping
查看完整题目与答案
【单选题】Thank you very much for giving me so much help. --- (_______) .
A.
No thank you
B.
You’re welcome
C.
OK
D.
Thanks
查看完整题目与答案
【单选题】It was stupid ____ him for help. Everyone knows that he is very mean.
A.
you ask
B.
for you to ask
C.
of you to ask
D.
of you asking
查看完整题目与答案