青书学堂: 对矩阵A作如下的Doolittle分解： ，则的值分别为2，2。（  ） https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/153181599162517f380c797ed4647bdd48e76fb4920a1image32.png,https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1531815991695ad5ca644c1354bd8a62827a3a347ebacimage33.png,https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1531815991766e071845b1044436990ce23b60e1da1bcimage34.png,https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1531815991837fca60c6e252e4f048ec6a4806e247214image35.png

青书学堂: 、101.325kPa的过冷水的化学势( )同温同压下冰的化学势。 https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/15088163201001cf97c2794b443ac8f2add2e2ff503c1image6.png,https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/150881632018305c1d995d8dc45fa8fd520ae545a0abcimage7.png,https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1508816320274cfcb5c43d42e433fbd975c6da0d2aa02image8.png

青书学堂: (填空题) 设随机变量,则___. https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/15160697492918c1cb372bdd24f8d8083933f84551ca5image27.png,https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1516069749405a50216da00434fd6b73d926fe3aff644image28.png

青书学堂: 接受原假设,不一定是正确的。 https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/158743382601800d59f0e0eb44339963f635749b935f1image11.png,https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/15874338260664235723d21ef4ec4bc7b8345850aab10image11.png

青书学堂: (单选题) 图示均质等截面直杆， 质量为 m ，长为 l, 已知 ， 则 的计算公式为 。 https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/ed74d336-17de-41ba-8ddc-89bc136ee1fa.jpg,https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/6fb26d08-708c-4ec5-8f8e-003ddce8ef28.jpg,https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/811b1021-584e-4d40-80af-9ed9d2ea41c2.jpg

青书学堂: https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/2dbf1945-c808-4353-9a21-f9f12909aa8a.jpg

青书学堂: (单选题) https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/bdc462bb-7333-4359-b13a-cbe48bfcd289.jpg

青书学堂: (单选题) https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/c9c6484f-046d-4610-aa45-bca1f932daed.jpg

青书学堂: 甲乙两个车间工人日加工零件数的均值和标准差如下: 哪个车间日加工零件的离散程度较大: https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/4d3d76e6-c223-4d08-8962-f3f91cd8e8f1.jpg,https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/3ddc4313-2181-4cde-9100-73dc4a850922.jpg

青书学堂: 周期信号的傅立叶变换为( ) https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/15877183883929eaf37afdb034a6a8f5dd8992980d485image95.png