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【单选题】
关于M=1+b/a,下列叙述正确的是A.
M表示放大率
B.
a表示肢片距
C.
b表示焦片距
D.
影像放大对像质的影响大于变形
E.
放大对成像是有害的
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举一反三
【简答题】结合生活实际分析电子商店的核心要素。
【简答题】What did Henning Brand find in urine, and what it could be used for?
【简答题】What kind of helper are the married couple trying to find? They are trying to find _______________.
【单选题】下列关于虚拟仪器的一些说法,哪些是正确的?
A.
虚拟仪器不属于智能仪器
B.
虚拟仪器建立在通用计算机和操作系统之上通过软件实现仪器功能
C.
基于PC的虚拟仪器可以对两个间隔时间为微秒级的外部事件产生实时响应
D.
若不考虑成本基于PC的虚拟仪器可以完全替代智能仪器
【简答题】What the New Yorker would find missing is what many outsiders find oppressive and distasteful about New York--its rawness, tension, urgency; its bracing competitiveness; the rigor of its judgements; a...
【单选题】What would the man do if he were to find a job?
A.
To work in a office.
B.
To be an animal doctor.
C.
To go abroad.
D.
To be a salesman.
【单选题】What did the researchers find in the National Park?
A.
Lions walking.
B.
Lions' tracks.
C.
Some camping facilities.
D.
Traps set by local hunters.
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