<img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202104/c3b75de7a0ff4216a7c936dfa863e921.PNG" /> A: <img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202104/9bc090082ac447aab731646e7ce4a372.PNG" /> B: <img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202104/5666843a7db64c75a2ec586b2db2f35f.PNG" /> C: <img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202104/fd98481c51284a9db6d3c21bd7fa60ca.PNG" /> D: <img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202104/6f7725736cf84d439343d0c213a650e7.PNG" />

<img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202104/9b4d8d9a44a447c2af0bf584f998415d.PNG" /> A: <img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202104/189e9a57dc014ea8900a1c5f439cd232.PNG" /> B: <img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202104/674e45e808174455ad0e186c323d1505.PNG" /> C: <img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202104/d383f19ca7094dfdaaa9c71c2b63d924.PNG" /> D: <img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202104/995fe28645a0486cbcd43885cdc51a76.PNG" />

信号通过匹配滤波器后的信噪比和信噪比增益为（ ） A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202104/ef96d88fe62b4c5ca109aa9ef7614e1e.png">，<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202104/e3e80b9e3b4f46178d4121af624bf5cf.png"> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202104/8c7bc2d622bc44d49f3b3c727edb7555.png">，<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202104/4970bc3dbb644890931b6318f6c1d797.png"> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202104/1e5de5cd5d2849b08a8451c2d16751e5.png">，<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202104/17970f7191f24c6f861c0c1357e0d621.png"> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202104/f804ad8708d9403d90f54fef1dcb4c72.png">，<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202104/4970bc3dbb644890931b6318f6c1d797.png">

下列分子中，没有<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202104/a876746a1b6a4c35b918bdbc6cd6e5d1.png" />离域键的是( )。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202104/36a350cfe47841088b4f2368b01fdf62.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202104/d97ba2811bb74bccb705c655c1dbca30.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202104/07448a3f91fe4fb3bad7f054df51c9ef.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202104/62fe3e693fef48a78e70c5aea62e9679.png" />

以下说法错误的是（）。 A: <img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202104/19d925ad13764c298684def78fbdc3ea.png" /> B: <img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202104/43f3e8b36fab4d1baf26ae9614035af9.png" /> C: <img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202104/eed86e09829a4f09b7802aca8c5efa57.png" /> D: <img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202104/3584ca66a59a438ea2e7f92979a19b72.png" />

<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202104/685431302ff949f2aa1ef6a730337dee.png" />，此旋律片段同时存在于下列哪组和声大小调式中（ ） A: C，c B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202104/2141580b985544a086e54a919153ac07.png" />A，<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202104/2141580b985544a086e54a919153ac07.png" />a C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202104/2141580b985544a086e54a919153ac07.png" />D，<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202104/2141580b985544a086e54a919153ac07.png" />d D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202104/2141580b985544a086e54a919153ac07.png" />B,<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202104/2141580b985544a086e54a919153ac07.png" />b

以下定积分结果正确的是( ) A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202104/54dbdcdeeddc402b8f711e76569b8a7e.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202104/0eac8f5db4d240cd9eae7c06bd9d03c1.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202104/af4c0dc6271f4de7ae490e4ca923940f.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202104/35f6852251fd4357a6a401d62b57d965.png" />

以下逻辑中属于与逻辑的是（ ）。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202104/31745276a8fe44adb0b51b937f8f4cb0.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202104/ab9a8a156f6a40349afde0dbdb1f5bc0.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202104/080e36b41e8f49409006517536e0c2c2.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202104/b76e1d4aa6e74ee499d5d4f52d7361a0.png" />

下面的旋律属于低音区的是（ )。 A: <img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202104/c6add8550ed34b56a660fd22a99400e8.png" /> B: <img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202104/00527db59c4e4ef0b487f63ccb30a709.png" /> C: <img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202104/e40b2582b2cd4c0281aa8183f55c7830.png" /> D: <img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202104/b3077caac23e4da9b1c900e97a04e99f.png" />

以下图中不是赵孟頫的作品有（）。 A: <img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202104/b3e0a84a3bc4493d8f6d7792df7b9901.png"> B: <img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202104/5cfabd802cc143b0a7b22bd226dbb7d9.png"> C: <img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202104/684f0e67b8744f7896a72e1295865b07.png"> D: <img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202104/1469c2c9217c40daa5f8b2bb72f354ad.png">