【判断题】【消耗次数：1】
力偶的作用面是组成力偶的两个力所在的平面。
①
正确
②
错误
参考答案：
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相关题目
【填空题】
[填空1] 定理是指作用在同一平面内的两个力偶，只要它的力偶矩的大小相等，转向相同，则该两个力偶彼此等效。
【单选题】
关于平面力偶的性质错误的是（）
①
力偶不能与一个力等效，也不能与一个力平衡
②
平面力偶对平面内任意一点的矩恒等于力偶矩
③
两个平面力偶等效的充分必要条件是力偶矩相等
④
力偶在作用平面上在同一刚体内部任意移转，影响力偶对刚体的转动效应。
随机题目
【单选题】
I’ll send you a short message as soon as I _______ in Hong Kong.
①
arrived
②
will arrive
③
am going to arrive
④
arrive
【单选题】
Good morning, Dr Johnson’s office. Can I help you?
①
Speaking, please
②
I’d like to make an appointment, please
③
Yes, go on
④
No, you can’t
【单选题】
The population of many Alaskan cities has __________ doubled in the past three years.
①
larger than
②
as great as
③
more than
④
as many as
【单选题】
The match was cancelled because most of the members __________ a match without a standard court.
①
objected to having
②
objected to have
③
were objected to have
④
were objected to having
【单选题】
- Shall we sit up here on the grass or down there near the water?
①
I’d rather stay here if you don’t mind
②
Sorry, I don’t like neither
③
Certainly, why not?
④
Yes, we like these two places
【单选题】
He said he would continue a support us _____ we didn’t break the rules.
①
as well as
②
as soon as
③
as far as
④
as long as
【单选题】
Can I have a look at your passport?
①
It is here
②
Here is it
③
Here you are
④
No, you can’t
【单选题】
Her sun – tanned face suggested that she __________ in excellent health.
①
be
②
is
③
was
④
were
【单选题】
Yesterday was my birthday. My mother .
①
made a cake to me
②
made a cake me
③
made for me a cake
④
made me a cake
【单选题】
That probably explains why public opinion is broadly __________ euthanasia (安乐死), or at least certain forms of it.
①
in relation to
②
in contrast to
③
in excess of
④
in favor of