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【单选题】
有一质点沿x方向作直线运动，它的位置由方程【图片】决定，其中x的单位是米,t的单位是秒。则它的速度公式为（）。A.
V=20t
B.
V=20t+8
C.
V=10t
D.
V=10t+8
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【多选题】关于态密度熵，热力学平衡，最大概然分布和宏观状态的理解，以下说法准确的是：
A.
对每一个系统的宏观状态，都有一个态密度熵
B.
相比其他非平衡态，热力学平衡态的态密度熵最大
C.
态密度熵可以随时间自发地增加或减少
D.
态密度熵最大的状态对应于最大概然分布
【单选题】Though she did not know Boston well, she made her way_____to the Home Circle Building.
A.
easy enough
B.
enough easy
C.
easily enough
D.
enough easily
【单选题】Although she did not know Boston well, she made her way ______ to the Home Circle Building.
A.
easy enough
B.
enough easy
C.
easily enough
D.
enough easily
【单选题】Although she did not know Boston well,she made
A.
29.Although she did not know Boston well,she made herway________ to the Home Cirele Building. ( 湖南 ) A.easy enough
B.
enougheasy
C.
easilyenough
D.
enougheasily
【单选题】She did not know whether to sell her books or______.
A.
to keep them for reference
B.
keeping them for reference
C.
if she should keep them for reference
D.
to be kept for reference
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