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【简答题】
如图：这是一款人脸识别门禁一体机，通过摄像镜头捕捉人脸信息，并将所拍图象与系统数据库中预先录入的人脸照片模板进行比对．该摄像镜头相当于______透镜，这种透镜对光线具有______作用（填“会聚”或“发散”），可用来矫正______眼（填“近视”或“远视”）；若镜头的焦距为10cm，为了能成清晰的像，人脸到镜头的距离应大于______cm．
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举一反三
【简答题】1-1 单片机具有哪些特点?主要应用在哪些领域?
【简答题】听对话，回答问题。 1. What are they talking about? A. Hobbies. B. Jobs. C. Sports. 2. What does the man think of sitting in front of the computer all day long? A. Interesting. B. Excellent. C. Boring.
【简答题】听下面5段对话，选择能回答每个问题的正确答案（听一遍）。 l. What is the man's sister good at? 2.What does the woman prefer? 3.Which season does the man like best? 4.What does the man want to do? 5.What does the woman's grandmoth...
【简答题】出票人在票据上的记载事项不得有《票据法》和《支付结算办法》规定事项以外的其他事项。（ ）
【单选题】Which of the following is the best to describe the author's tone towards Twitter?
A.
Objective.
B.
Sympathetic.
C.
Cynical.
D.
Enthusiastic.
【单选题】Who Decides? Whether you are a tarried parent fighting with a 14-year-old about an objectionable video or a member of the Supreme Court assessing nuanced arguments about obscenity, the task of decidin...
A.
The decision whether or not to rent from a video store an objectionable film.
B.
The decision to ban the film when found something objectionable in it.
C.
The decision to tell the 14-year-old not to see the objectionable part.
D.
The decision to protect the artistic expression of the film even objectionable.
【单选题】Who Decides? Whether you are a harried parent fighting with a 14-year-old about an objectionable video or a member of the Supreme Court assessing nuanced arguments about obscenity, the task of decidin...
A.
The decision whether or not to rent from a video store an objectionable film.
B.
The decision to ban the film when found something objectionable in it.
C.
The decision to tell the 14-year-old not to see the objectionable part.
D.
The decision to protect the artistic expression of the film even objectionable.
【单选题】The authors attitude towards loosening the control over kids is______.
A.
confident
B.
objective
C.
critical
D.
supportive
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