单项选择题

(单选题)在HTML语言中,定义级联样式表CSS的类选择器以( )符号开头 A.
#(井号) B.
.(点号) C.
!(叹号) D.
% (百分号)

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单项选择题

Three common interview stages include
A、the introduction, the question-and-answer stage and the conclusion.
B、the introduction, the discussion and the close.
C、 the warm-up, the question-and-answer stage and the close.
D、the small talk, the formal discussion and the summary.

单项选择题

排水立管上检查口的设置高度一般距地面1m。
A、正确
B、错误