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【判断题】
法向反力和径向反力之间的夹角为摩擦角。 【 】A.
正确
B.
错误
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】简述西方学者提出的构成一个旅游目的地总体旅游产品的 4As。
【单选题】______, I am afraid I can't go with you.
A.
With so much work to do
B.
With so much work doing
C.
For so much work to do
D.
To do so much work
【单选题】在POWERPOINT 2010中以下操作,不能在PPT文件中插入一个新幻灯片的是:
A.
在“普通视图”下,将鼠标定在左侧的窗格中,然后按下回车键
B.
单击“开始”功能区中的“新建幻灯片”按钮
C.
使用快捷键“Ctrl+N”
D.
使用快捷键“Ctrl+M”
【单选题】I don’t think he can finish the work,______?
A.
do I
B.
can’t I
C.
can’t he
D.
can he
【单选题】— The problem is very difficult. I'm afraid you can't work it out. — _____ or not I can succeed, I'll have a try. [ ]
A.
If
B.
Since
C.
Whether
D.
As
【单选题】I don’t think you can finish the work in such a short time, __________?
A.
can’t you
B.
can you
C.
do I
D.
don’t I
【单选题】—Can you finish the work in three days? —Sorry, I ________. My computer doesn't work. [ ]
A.
mustn't
B.
may not
C.
can't
D.
needn't
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