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【单选题】
酒店服务员在工作岗位上,应该采用标准的站姿为客人服务,以下站姿错误的是(A.
头部微微抬起.面部朝向正前方
B.
腰部直立,上体自然挺拔
C.
两脚并拢.双膝紧靠在一起
D.
双臂自然下垂,处于身体两侧
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【简答题】单相桥式半控整流电路，其主电路和触发电路工作都正常，当所带白炽灯泡灯丝被烧断后，用示波器观察晶闸管两端电压波形、二极管两端电压波形以及灯泡两端电压波形有何不同?
【单选题】When I opened the door, I found my father sitting in his chair, completely _______ in the humorous stories he was reading.
A.
absorbed
B.
applied
C.
attracted
D.
addicted
【简答题】我国金属货币的使用是从（）开始，战国时期大量使用。
【单选题】Read the sections 4.1 to 4.3 of the paper.What is the function of 4.3?
A.
To confirm the validity of the results stated in 4.1 and 4.2.
B.
To address readers’ doubt that the effect of English as stated in 4.1 and 4.2 is driven by pairs in which one country is native English speaking.
C.
To support the main hypothesis of the present study.
D.
All of the above
【简答题】简述我国战国时期稷下学宫在管理上的特点。
【单选题】Were there any sections in it?
A.
Yes, it had 2 sections.
B.
Yes, it had many sections.
C.
Yes, it had 5 sections.
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