A customer states that they cannot print from their laser printer. The printer displays a ‘Paper Jam’ error. Upon inspection there is no paper jam. The only indication is a clicking sound when the user tries to print. Which of the following is the MOST likely cause?（）
第1题：
Customer, This suit looks nice. _________?
Assistant: Yes, of course. The fitting room is over there.
A． How much is it
B． Can I Try it
C． How can I buy it
D． Can I Try it on
第2题：
Receptionist: Can I help you?
Customer: ______. Where do I pay my fees?
A、As you please
B、Yes, please
C、Thank you
D、Yes, you can
第3题：
Uncertainty refers to a situation where:
A the outcomes are known but their probabilities are high
B the outcomes and their probabilities are known
C neither the outcomes nor their probabilities are known
D states of nature can change at any time
E probabilities of various states of nature can change at any time
第4题：
请从下列选项中选出“在美国，人人都能买到枪”地道的英文表达。（）
第5题：
Bank clerk: ______, Madam?
Customer: Well, I just can't remember my password for the bank account.
第6题：
Old-fashioned cheeses can no longer be bought anywhere in the United States.()
第7题：
A customer asks for help choosing their WAN technology, the customer is looking for A solution that can be used across very long distances, provides QoS and VPN support, and is sensitive to their budgeting needs , which WAN technology would you recommend?（）
A.MPLS
B.framerelay
C.leaseDline
D.metroethernet
E.widetransport
第8题：
109 Uncertainty refers to a situation where:
A. the outcomes are known but their probabilities are high
B. the outcomes and their probabilities are known
C. neither the outcomes nor their probabilities are known
D. states of nature can change at any time
E. probabilities of various states of nature can change at any time
第9题：
第10题：
A customer asks for help choosing their WAN technology, the customer is looking for A solution that can be used across very long distances, provides QoS and VPN support, and is sensitive to their budgeting needs , which WAN technology would you recommend?（）