When refrigerant leaves the receiver, it flows next on to the （）.

Mike ______ his colleagues when the phone rang. 

Mike, you ____ on the phone

When designing speaking tasks, we must follow the principles except.

When you enter the interface command auto qos voip cisco-phone on a port at the edge of a network,how does the Cisco Catalyst switch detect if a Cisco IP Phone is connected to the port?（）

Generally speaking，in the Northern Hemisphere，when winds are blowing from between SE and SW the barometric reading（）.

When will the professor speak?

We ______ use mobile phones when the plane takes off.

Topic 2：My View on College Students’ Use of Mobile Phones　　Questions for reference:　　1) What is the phenomenon of college students’ using mobile phones?　　2) What might be the advantages and disadvantages of their using mobile phones?　　3) What could be done to this problem?

When you hear three short blasts on the ships whistle and the same signal on the general alarm bells, you （）.

I was talking with my mother on the phone when we were（）suddenly.

Ezonexam is installing IP phones in a new office. The phones and office computers connect to the same device. To ensure maximum throughout for the phone data sessions, the company needs to make sure that the phone traffic is on a different network from that of the office computer data traffic. What is the best network device to which to directly connect the phones and computers and what technology should be implemented on this device? (Choose two)