皮皮学,免费搜题
登录
搜题
【单选题】
乙醇沸点 (78.3 °C ) 与分子量相等的甲醚的沸点 (-23.4 °C ) 相比高的多是由于 ( )
A.
甲醚与水形成氢键
B.
乙醇与水形成氢键 ;
C.
甲醚形成分子间氢键 ;
D.
乙醇分子间形成氢键 ;
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】Can you spare me some paper? Mine ____.
A.
has run out
B.
has used up
C.
has run out of
D.
is run out
【简答题】阅读理解。 DICKY lives a poor life with his father. One day his father finds him a strange toy from a junkyard. Dicky names it Changjiang 7 (CJ7长江七号). CJ7 turns out to be an alien dog with superpowers. Dic...
【简答题】请简述从原理图到Pcb设计的过程。
【单选题】If you run ____ two hares you will catch neither.
A.
into
B.
after
C.
off
D.
out of
【简答题】V. 听短文,判断正(T)误(F)。短文读两遍。 ( )21. Adam comes from a big city. ( )22. Adam likes sports very much. ( )23. Adam’s father is an English teacher. ( )24. Adam and his family live on the elh ...
【单选题】---Why didn’t you write? ---My ink has _______.
A.
used up
B.
run out of
C.
given away
D.
run out
【简答题】根据听到的对话和问题,选出正确的答案。 (     ) 1. A. My mother is. (     ) 2. A. Take the No. 21 bus. (     ) 3. A. John. (     ) 4. A. Thir yuan. B. My father is. B. By taxi. B. Jenny. B. Four yuan. C. Both my moth...
【单选题】His father is ____ than his mother.
A.
older four years
B.
as four years older
C.
four years older
D.
bigger four years
【单选题】— Why did you stop writing, Tom?           — My ink has _______.
A.
used up
B.
run out
C.
run out of
D.
been run out
【单选题】My father is very busy with his work. He has ____ time to do the housework.
A.
little
B.
few
C.
a little
D.
a few
相关题目: