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4.摄影创作中，常用的影子包括物体投影、【 】、光滑表面反光影像和镜中影像。
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举一反三
【单选题】长短相等、直径相同的两根管予，如果迭合在一起的话，它们的投影就完全重台，反映在投影面上好象是一根管子的投影，这种现象称为管子的( )。
A.
积聚
B.
重迭
C.
交叉
D.
重合
【多选题】关于三面投影体系，正确的说明有（）
A.
在三面投影体系中，三个投影面是相互垂直的
B.
V投影面与W投影面之间的交线称为X轴线
C.
V投影面与H投影面之间的交线称为X轴线
D.
V投影面与W投影面之间的交线称为z轴线
E.
W面的投影图，称为正立投影图
【单选题】In the wake of 11 September, Visionics, a leading manufacturer, issued a fact sheet explaining how its technology could enhance airport security. They called it "protecting civilization from the faces...
A.
any way, the face-recognition technology is good enough to frighten the terrorists
B.
the industry will have to recognize the real situation and work hard to improve the technology
C.
all the claims are premature
D.
we must not expect too much
【单选题】Passage 4 In the wake of 11 September, Visionics, a leading manufacturer, issued a fact sheet explaining how its technology could enhance airport security. They called it "protecting civ...
A.
Too many false alarms were raised.
B.
Everyone should look straight at the camera.
C.
Only 90% of suspects at an airport were found.
D.
Everyone should not disguise himself.
相关题目：
【单选题】长短相等、直径相同的两根管予，如果迭合在一起的话，它们的投影就完全重台，反映在投影面上好象是一根管子的投影，这种现象称为管子的( )。
A.
积聚
B.
重迭
C.
交叉
D.
重合
【多选题】关于三面投影体系，正确的说明有（）
A.
在三面投影体系中，三个投影面是相互垂直的
B.
V投影面与W投影面之间的交线称为X轴线
C.
V投影面与H投影面之间的交线称为X轴线
D.
V投影面与W投影面之间的交线称为z轴线
E.
W面的投影图，称为正立投影图
【单选题】In the wake of 11 September, Visionics, a leading manufacturer, issued a fact sheet explaining how its technology could enhance airport security. They called it "protecting civilization from the faces...
A.
any way, the face-recognition technology is good enough to frighten the terrorists
B.
the industry will have to recognize the real situation and work hard to improve the technology
C.
all the claims are premature
D.
we must not expect too much
【单选题】Passage 4 In the wake of 11 September, Visionics, a leading manufacturer, issued a fact sheet explaining how its technology could enhance airport security. They called it "protecting civ...
A.
Too many false alarms were raised.
B.
Everyone should look straight at the camera.
C.
Only 90% of suspects at an airport were found.
D.
Everyone should not disguise himself.
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