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【多选题】
光圈的功能()。A.
调节成像的照度
B.
调节景深
C.
调节成像质量
D.
调节速度
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皮皮学刷刷变学霸
举一反三
【单选题】'The earth goes around the sun. ' is a______.
A.
directive
B.
commissive
C.
expressive
D.
representative
【简答题】Fill in each of the blanks in the following sentences with a phrase listed below. Change the form where necessary. build ... on fit into give and take hold on in short in the course of in vain let ......
【单选题】Mom believes that those words put to paper two centuries ago really _____ something.
A.
mean
B.
represent
C.
tell
D.
say
【多选题】在Photoshop cs6中,新建图层,可以使用下列哪些方法。
A.
单击图层面板底部的“创建新图层”按钮
B.
执行“图层”|“新建”|“图层..."
C.
Shift+Ctrl+N
D.
单击”图层“面板右上角的拓展按钮，选择”新建图层..."
【单选题】During _________ 3-day conference, global warming became _________ major concern of all the representatives.
A.
the; a
B.
a; the
C.
the; /
D.
a; /
【简答题】溶胶的凝胶化过程包括（）和（）两类。
【单选题】Let H ______ the quantity of heat which has been converted into mechanical work.
A.
represent
B.
represents
C.
representing
D.
being represented
【简答题】溶胶的凝胶化过程包括: 和 。
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