【单选题】
<imgwidth="74"height="23"src="http://wljy.whut.edu.cn:80/uploadfiles/word/gctx_zk004.files/gctx_zk0045648.png">表示<imgwidth="52"height="22"src="http://wljy.whut.edu.cn:80/uploadfiles/word/gctx_zk004.files/gctx_zk0045752.png">的孔与<imgwidth="56"height="24"src="http://wljy.whut.edu.cn:80/uploadfiles/word/gctx_zk004.files/gctx_zk0045857.png">的轴构成( )
【判断题】
当网络函数<imgwidth="38"height="22"src="http://wljy.whut.edu.cn//uploadfiles/word/dlylx06.files/dlylx063804.png">确定后,该网络的零状态响应<imgwidth="34"height="22"src="http://wljy.whut.edu.cn//uploadfiles/word/dlylx06.files/dlylx063840.png">为<imgwidth="122"height="22"src="http://wljy.whut.edu.cn//uploadfiles/word/dlylx06.files/dlylx063864.png">。
【单选题】
甲乙两个车间工人日加工零件数的均值和标准差如下:甲车间:<imgalt=""src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204133016_901.png"/>=70件,<imgalt=""src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204133853_863.png"/>=5.6件,乙车间:<imgalt=""src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204132636_598.png"/>=90件,<imgalt=""src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191129/20191129164519_624.png"/>=6.3件,哪个车间日加工零件的离散程度较大()
【单选题】
单相变压器磁路饱和时,主磁通<imgalt=""src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191205/20191205101139_207.png"/>和励磁电流<imgalt=""src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191205/20191205100752_202.png"/>的波形()
【单选题】
系统在<imgwidth="56"height="24"src="http://wljy.whut.edu.cn//uploadfiles/word/zdkzll002.files/image003.png">作用下的稳态误差<imgwidth="52"height="24"src="http://wljy.whut.edu.cn//uploadfiles/word/zdkzll002.files/image004.png">,说明()
①
型别<imgwidth="38"height="20"src="../uploadfiles/word/zdkzll002.files/image005.png">;
【判断题】
当两个<imgwidth="27"height="22"src="http://wljy.whut.edu.cn//uploadfiles/word/dlylx05.files/dlylx054720.png">二端口网络按并联方式连接后,其等效<imgwidth="15"height="18"src="http://wljy.whut.edu.cn//uploadfiles/word/dlylx05.files/dlylx054760.png">参数矩阵为<imgwidth="76"height="24"src="http://wljy.whut.edu.cn//uploadfiles/word/dlylx05.files/dlylx054788.png">。
【判断题】
当两个<imgwidth="27"height="22"src="http://wljy.whut.edu.cn//uploadfiles/word/dlylx04.files/dlylx044752.png">二端口网络按串联方式连接后,其等效<imgwidth="16"height="18"src="http://wljy.whut.edu.cn//uploadfiles/word/dlylx04.files/dlylx044792.png">参数矩阵为<imgwidth="82"height="24"src="http://wljy.whut.edu.cn//uploadfiles/word/dlylx04.files/dlylx044820.png">。
【判断题】
对称的无源二端口网络,<imgwidth="15"height="18"src="http://wljy.whut.edu.cn//uploadfiles/word/dlylx02.files/dlylx023787.png">参数中满足<imgwidth="130"height="21"src="http://wljy.whut.edu.cn//uploadfiles/word/dlylx02.files/dlylx023794.png">。
【单选题】
设<imgwidth="50"height="17"src="http://wljy.whut.edu.cn//uploadfiles/word/lsss002.files/image018.png">,则有( )
①
<imgwidth="35"height="16"src="../uploadfiles/word/lsss002.files/image019.png">
②
<imgwidth="37"height="18"src="../uploadfiles/word/lsss002.files/image020.png">
③
<imgwidth="37"height="19"src="../uploadfiles/word/lsss002.files/image021.png">
④
<imgwidth="38"height="20"src="../uploadfiles/word/lsss002.files/image022.png">