A、<span style="font-size:15px;font-family:'微软雅黑','sans-serif'">不可见</span>
B、<span style="font-size:15px;font-family:'微软雅黑','sans-serif'">固定</span>
C、<span style="font-size:15px;font-family:'微软雅黑','sans-serif'">验证</span>
D、<span style="font-size:15px;font-family:'微软雅黑','sans-serif'">多行文字</span>
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