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【多选题】
如下图所示,用图像填充文字时,以下说法正确的是A.
文字必须是点文字
B.
文字可以是段落文字也可以是点文字
C.
用图像填充文字时，图案图层文字图层的上方
D.
用图像填充文字时，图案图层文字图层的下方
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举一反三
【单选题】a green house is a building made of glass which is used for keeping plants warm when the outside temperature is low. In a similar way there are several gases in the atmosphere which trap the heat prod...
A.
the way in which gases are used for keeping plants warm
B.
a natural course which is to some degree helpful to us.
C.
the way greenhouse gases trap heat on the earth
D.
the whole course in which greenhouse gases prevent heat .
【简答题】The air filter is used on engine to trap contaminants, yet provide a free flow of air into the engine.
【判断题】The air filter is used in the engine to trap contaminants, yet provide a free flow of air into the engine. Air filters which are usually used in cars are made of paper element. These filters permit ai...
A.
正确
B.
错误
【简答题】影响变压器连接组别的因素有_ __、_ _和_ _。
【简答题】影响变压器连接组别的因素有____、____、____。
【单选题】A high-temperature alarm or______which will melt is used to guard against the explosion of comperssor air pipelines.
A.
a flame trap
B.
a relief valve
C.
a fusible plug
D.
a bursting cap
【简答题】A trap is used to _____________________
【单选题】**A high temperature alarm or ____ which will melt is used to guard against the explosion of compressor air pipelines.
A.
a flame trap(阻焰器)
B.
a relief valve
C.
a fusible plug(易熔塞)
D.
a bursting cap(防爆)
【单选题】A high temperature alarm or （） which will melt is used to guard against the explosion of compressor air pipelines.
A.
a flame trap
B.
a relief valve
C.
a fusible plug
D.
a bursting cap
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