—— ____ I come in， Mr Green？ A: Must B: May C: Will D: Need

M: Hello, may I speak to Mr ParkW: I am sorry. Mr Park has gone to business. Mr Brown and Mr William are taking over his work during this time. You can speak to them. Who does the man want to speak to(). A: Mr William. B: Mr Park. C: Mr Brown.

Miss Smith, may I present Mr Brown? A: 礼物 B: 介绍 C: 现在 D: 出席的

You<br/>are Mr Smith. When you hear over the phone "May I speak to Mr Smith? ", you can say ( ). A: Hello. B: I’m<br/>sorry. C: Speaking. D: Who are<br/>you?

- Good morning. I’d like to speak to Mr Smith.- Sure. May I ask ___( )_____ is calling? A: what B: who C: when D: why

A: May I talk to Mr。 Smith about the sales plan?B: Sorry。 He is in the meeting。Q: What is Mr。 Smith doing now?( ) A: He&#39;s writing a report. B: He&#39;s on a business trip. C: He&#39;s attending a meeting. D: He&#39;s on his holiday.

一个垄断厂商使（）以最大化利润，对它而言，有（）。因此，它在（）的地方其利润最大化 A: MR>MC,MR B: MR=MC,MR=P,MC=P C: MR=MC,MR D: MR>MC,MR=P,MC

垄断厂商短期均衡时（ ）。 A: MR=SMC B: MR=LMC C: MR=SAC D: MR=LAC

厂商利润最大化原则是（） A: MR〉MC B: MR〈MC C: MR=MC D: MR〉TC

对垄断企业而言，总是有__________。 A: MR>AR B: MR>P C: MR<P D: MR=P