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【判断题】
4.2.5在竞争条件下,企业利润最大化的原则是MR=MC。( )

正确
错误
【判断题】
A: Sorry, Mr. Thomas left here just a few minutes ago. B: May I take a message?

正确
错误
【单选题】
22. One day while Mr. King was working, he had a/an ____: his left leg was badly injured.

business
accident
matter
event
【单选题】
A: Can I take a message? Ill let Mr. Liu know as soon as he comes back. B: [填空].

I hope he will call me back
No. Ill call somebody else
Dont bother. Ill try his cell
I dont think its appropriate
【单选题】
Now Mike isn’t here. He ________ Mr. Green’s. Perhaps he ________ back in a few minutes.

went to ; is coming
has gone to ; will come
has been to ; will be
is going to ; has come
【单选题】
Now Mike isn’t here. He _______ Mr. Green’s. Perhaps he _______back in a few minutes.

went to ; is coming
has gone to ; will come
has been to ; will be
is going to ; has come
【简答题】
简述利润最大化原则MC=MR在完全竞争条件下可表达为MC=P

【单选题】
A: [填空], Mr. John? You dont look very well. B: Ive had a pain in my chest since this morning.

How are you
Whats your trouble
How are you feeling
How are you getting on
【单选题】
10.Now Mike isn’t here. He _________ Mr. Green’s. Perhaps he _______ back in a few minutes.

went to; is coming
has gone to; will come
has been to ; will be
is going to; has come
【多选题】
边际收益(MR)等于边际成本(MC)是下列哪种市场结构利润最大化的必要条件( )

完全竞争
垄断竞争
寡头
完全垄断