What phrases might you use or hear?

At the end of your presentation, you may wish to open the floor to questions – to ask if anyone has any questions about your presentation.
你的演讲结束后你可能会留出自由问答时间，问下听众是否对你的演讲有问题.
Imagine it is the end of your presentation and you are asking if there are any questions. What phrases might you use or hear?
假设你的 演讲结束了，你正在问听众是否对你的演讲有疑问，你会用到什么样的短语或是听到什么样的问题呢？
Presentations: questions
Useful Phrases
If you have any questions, I would be happy to answer them now Can I just ask…? Are there any questions about any of that? Yes, a very good question Can you explain to me…?
Tim:  Ladies and gentlemen, if you have any questions, I'd be happy to answer them 
now. 
Carrie: Tim:  Yeah, can I just ask, graph¹ number 3, that last one you showed us, can you explain to me where you’re intending to find the extra income to increase the designer range in the maternity（母性，母道） wear? Yes, a very good question. I’ve looked at the office wear range and it’s quite heavy on material, holiday wear tends to be much lighter², much smaller amounts of material involved and I ...(本文由在线英语听力室整理编辑)

1 graph   

n.图表，图解，曲线图

参考例句：

• Such a graph is defined to be a contact network.我们把这样的图定义为一个接触网络。
• Our soundings are displayed in the form of a graph.我们的调查结果已用图表列出。

2 lighter   

n.打火机，点火器；驳船；v.用驳船运送；light的比较级

参考例句：

• The portrait was touched up so as to make it lighter.这张画经过润色，色调明朗了一些。
• The lighter works off the car battery.引燃器利用汽车蓄电池打火。