问题
单项选择题
HTML 种的分行标记市（25）。
A．
B．
</p><p>C．</p><p> </p><p>D．
</div>
<div class="line"></div>
<div class="content_answer">
<span class="text_left">答案</span>
</div>
<div class="content content_answer_bg">
<p>参考答案：C</p> </div>
</div>
</article>
</main>
<section>
<div class="line"></div>
<div class="content_border">
<div class="content_top">
<span class="text_left reb">问答题 简答题</span>
</div>
<div class="list">
<a href="https://app.ixiawen.com/question/36196589/f4fc7a4a147a807b1f482395cfec4ccd.html" class="black" target="_blank"><p>二段抽汽逆止门设有哪些连锁和保护？</p></a>
</div>
<div class="content_bottom">
<span class="text_right"><a href="https://app.ixiawen.com/question/36196589/f4fc7a4a147a807b1f482395cfec4ccd.html" class="blue" target="_blank">查看答案</a></span>
</div>
</div>
<div class="line"></div>
<div class="content_border">
<div class="content_top">
<span class="text_left reb">多项选择题</span>
</div>
<div class="list">
<a href="https://app.ixiawen.com/question/52320949/10c8ecfa113a21a8701a33afac6a654f.html" class="black" target="_blank"><p>风电机组对低电压穿越的要求是（）</p><p>A.风电场内的风电机组具有在并网点电压跌至20%额定电压时能够保证不脱网连续运行625ms的能力</p><p>B.风电场内的风电机组具有在并网点电压跌至10%额定电压时能够保证不脱网连续运行625ms的能力</p><p>C.风电场并网点电压在发生跌落后2s内能够恢复到额定电压的90%时，风电场内的风电机组能够保证不脱网连续运行</p><p>D.风电场并网点电压在发生跌落后2s内能够恢复到额定电压的80%时，风电场内的风电机组能够保证不脱网连续运行</p></a>
</div>
<div class="content_bottom">
<span class="text_right"><a href="https://app.ixiawen.com/question/52320949/10c8ecfa113a21a8701a33afac6a654f.html" class="blue" target="_blank">查看答案</a></span>
</div>
</div>
<div class="line"></div>
</section>
<footer>
<div class="xieyi">
<div class="w">
<a href="https://www.ixiawen.com/about/fuwu.html" rel="nofollow" class="hui" target="_blank">服务协议</a>
</div>
<div class="w_center">|</div>
<div class="w">
<a href="https://www.ixiawen.com/about/yinsi.html" rel="nofollow" class="hui" target="_blank">隐私权政策</a>
</div>
<div class="w_center">|</div>
<div class="w">
<a href="https://www.ixiawen.com/" class="hui" target="_blank">APP下载</a>
</div>
</div>
</footer>
</body>
</html> 