皮皮学，免费搜题
登录
搜题
【简答题】
用分子的知识对下列现象的解释，正确的是 A ．做饭时炊烟袅袅，是由于分子间存在斥力 B ．一块金属很难被压缩，是由于分子间没有问隙 C ．变瘪的乒乓球放入热水中鼓起来，是由于分子受热变大 D ．房间里放一箱苹果，满屋飘香，是由于分子做无规则运动
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】Statistics show that house prices in the last 2 years have risen they had expected.
A.
twice as much as
B.
as much as twice
C.
as twice much as
D.
as much twice as
【单选题】______ the house prices have risen sharply, the number of buyers is as great as ever.A．Despite t
A.
35. ______ the house prices have risen sharply, the number of buyers is as great as ever. A．Despite the fact that
B.
In spite of what
C.
Regardless of
D.
Contrary to
【单选题】如图所示的荡木机构中,O 1 O 2 =CD,O 1 C=O 2 D=1m,在图示位置时O 1 C的角速度为 1rad/s,角加速度为2rad/s2,则荡木中点M的加速度为( )
A.
a M =1m/s²
B.
a M =√5 m/s²
C.
a M =√2 m/s²
D.
a M =2m/s²
【简答题】请根据材料5和材料6，写一份简短的汇报材料，分析云南、山西两省的做法对河北建设文化强省提供了哪些重要启示，以供领导决策时参考。
相关题目：