下列哪个单词的划线部分发[ɔɪ ]的音（ ）
A:
B:
C:
D:
A:
B:
C:
D:
举一反三
- 下列方程为伯努利方程的是（ ）。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202108/0622f56257874ab19e680d587fd8a4fc.png"> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202108/5ce3fc785b724e3da7d07b8d6a0ecaf3.png"> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202108/ab3de1c35e9e419fa301a33bddd5ee0c.png">+<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202108/2c226f2daecf40448b08c3b26a4db60e.png"> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202108/88be95dd74814341a1894f32f073b9ec.png"><img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202108/00fbcbc7c3574f94934fa3adc8843ccf.png">
- 开环系统频率特性<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202108/d87c0f560f1542028a3602b52456fae0.png" />，当<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202108/c0f50539680f40a784c2a0d803f0f5d7.png" />时，其频率特性相角<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202108/ff41a81bec7c421c8178de199c438e05.png" />（ ）。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202108/589b5e2ab46b459882a2824ff9567c36.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202108/370b677492de485ca61114324b5d00fe.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202108/95723a2a938f4944a98b18d89f607986.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202108/c08161009369424f9a3510d7c77d9943.png" />
- 直线<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202108/64709df03a7b45ebbc6d752183b8f22e.png" />与直线<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202108/5ca5aa44859c42ddaa3207626d2b9537.png" />的公垂线方程为（ ） A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202108/a4c463fa2c3f49df9d7f2bb2e9fc4030.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202108/627b64a33e944efcba416aea0f40dc76.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202108/966e8a14e6754060b800dff88721784a.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202108/f8f41491de204a9eb3fb306208c3b08a.png" />
- 请找出划线部分发音相同的一组单词（ ） A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202108/e35a67acf6d64372b1dbd71f0fa7b3bc.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202108/6e2ee1e75ead4317a6c561d59636374e.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202108/898275fe45d7467d9a82e961e96b4795.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202108/36d4cde9c34844b5a2c155dcb9f03602.png" />
- 请选择与其他三个单词划线部分发音不同的单词（ ） A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202108/91014756346f423cb443c6bbeadf50ca.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202108/3bc237ac4116484996301d37fd4e41d7.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202108/8a2f91b3beb04d7596532b7264be5d54.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202108/0c996511e6fb45c5b1dad3ea76d3137a.png" />