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【单选题】
当绘制出的图形太大超过图形显示区域或太小未在图形显示区域正常显示时,除了可以直接单击图标外,还能按下Ctrl+( )键,使图形全屏显示。A.
C
B.
D
C.
E
D.
F
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举一反三
【简答题】由( )植物体上切取下来的,用于( )的各种接种材料。包括( )、组织、细胞或原生质体等叫做( )
【单选题】______means the lack of a logical connection between the form. of something and its expression in sounds.
A.
Ambiguity
B.
Abstractness
C.
Arbitrariness
D.
Fuzziness
【单选题】Lack of meteorological and tidal research means, researchers have to depend on
A.
measuring the output of coconut.
B.
observing the erosion of foreshores.
C.
collecting short interesting accounts concerning climate.
D.
computer model on climate changes.
【单选题】It can be inferred from the last paragraph that scientists______.
A.
lack sufficient means to combat lead pollution
B.
still consider lead pollution a problem
C.
believe lead pollution is not a problem any more
D.
have found way to solve the problem of lead pollution
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