求解线性方程组<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201808/880cd7ef18d94cc0aa4ee9c0b7118d33.png" />的雅可比迭代矩阵是___________. A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201808/1408cafef14540b494c7b6c38ea2e6cf.png" /> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201808/568a94ce0d574f3ba8a3baf7e3b2ed88.png" /> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201808/763ed8aa81884ee18fc5168914e29a6f.png" /> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201808/467528c3ec81466494978179c7c43c48.png" />

下面不属于移植设计的案例是？ A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201808/9fa6d465b6914dc18886ae7dbcedfa7c.png"/> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201808/fdccc4977be440358387da7085f6a886.png"/> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201808/53e768bc11704cac931eb940f1f37461.png"/> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201808/4dc8cde899fe4008bbef5a9db1bfb34d.png"/>

已知轴的主视图，根据标注选择所对应的正确的断面图，其中正确的B-B是（ ）。<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201808/fb36fa86ece84fbcbc0f2230abb855ad.png" /> A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201808/0310f38d6cfc4fdd8b4d527907f732a3.png" /> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201808/dba503dc28c741698b1cf083200d24ad.png" /> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201808/1b977d55d6a84bceb9e6c39b7f9d878c.png" /> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201808/82093ffe849a4e789e46eaf4c768a318.png" />

题中 音型的名称是什么？http://image.zhihuishu.com/zhs/onlineexam/ueditor/201808/ab958f5fdcb34bb0bf860cb2d777af59.png

在经济订货量决策模型中，计算经济订货量的公式下列正确的是（）。 a. b. c. d.http://image.zhihuishu.com/zhs/onlineexam/ueditor/201808/e995359cd77d4f4abed839b041e35ea1.png