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【单选题】
已定义c为字符型变量,则下列语句中正确的是A.
c='97'
B.
c="97"
C.
c= ‘a
D.
c="a"
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【单选题】The zero of【图片】is ______, and the pole is ______ .
A.
z=0,z=0.5
B.
z=0,z=2
C.
z=0.5,z=0
D.
z=2,z=0
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【单选题】下列关于块级元素和行内元素说法正确的是 ( )。
A.
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B.
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C.
多个块级元素能在同一行上显示。
D.
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