在三相交流电路中，若电源是Y形联接，负载Δ形联接，则负载线电压是相电压的（）
A:
倍
B:
倍
C: 1倍
D:
倍
A:
倍B:
倍C: 1倍
D:
倍
举一反三
- 通过点<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/a13927df1bf542dfa036a32b10364f69.png" />的拉格朗日插值基函数<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/65695a42c7a14b649b6aa4fb68f7e499.png" />满足( ) A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/99af333f3e934ef6a75022ee1e728b53.png" />＝1，<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/7769611ac5cd4c93975be7c41a49ae71.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/99af333f3e934ef6a75022ee1e728b53.png" />＝1，<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/7769611ac5cd4c93975be7c41a49ae71.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/99af333f3e934ef6a75022ee1e728b53.png" />＝0，<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/7769611ac5cd4c93975be7c41a49ae71.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/99af333f3e934ef6a75022ee1e728b53.png" />=0，<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/f80e8e400f3f4916bcaf6b5fde757f16.png" />
- 在下列的HTML中，哪个可以产生超链接？ A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/a9bcf63958144ed794c2429877db052a.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/5f5d626c8bba4c9486c2455dc0f20be5.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/3a165307757a4da5b4e34381b1fe8cf5.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/334e855f187b4c2684d73890e18d5988.png" />
- 中性水溶液是指（ ）。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/9bef71113e73499f9f3d9f877a0d07f3.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/315534da2fa24656b8ac34316eb43211.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/0f25c8c53d964d3290ee60bab0aa7fe7.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/0e9eca0e483743c787605572ed065b97.png" />
- <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/48fc4686323b4fc2aed9a5ded068e010.png" />则MnS在盐酸中溶解的平衡常数为（ )。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/92fc7a394f754ea59f5812ddedfa9ca1.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/4f1e00c110584145843649c7c0f0fa55.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/ca9777100e5d4abeaa282239afdb5ee0.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/aacd92054a5745feb6f3c98233158b95.png" />
- （ ）属于变形工具组 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/5c560845dbf2422c87ee3a5e67f68690.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/ba8211e54394467084e55d8c039638f3.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/8abd259feec748b6818447a3039e4b70.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/3b82f4425c304802b45be795ab5bf7bf.png" />