https://assets.asklib.com/psource/2015110509173263996.jpg https://assets.asklib.com/psource/2015110509173368846.jpg https://assets.asklib.com/psource/2015110509173466893.jpg
加权法算均值，可以在次数分布表的基础上采用加权法计算平均数，计算公式为： https://assets.asklib.com/psource/2015102011323392806.jpg ，对其中代数符号认识正确的有（）。
微分方程 https://assets.asklib.com/psource/2015110116014788369.png -4 https://assets.asklib.com/psource/2015110116020651779.png ′+5 https://assets.asklib.com/psource/2015110116020651779.png ＝0的通解为 https://assets.asklib.com/psource/2015110116020651779.png ＝（）。
应用逻辑代数运算法，则 https://assets.asklib.com/psource/2014112614590318096.jpg 可简化为（）。
设行列式 https://assets.asklib.com/psource/2015110316105097137.png ，Aij表示行列式元素aij的代数余子式，则A13+4A33+A43等于：（）
下列哪项不属于口腔器官（）。 https://assets.asklib.com/psource/2015090915593930516.jpg https://assets.asklib.com/psource/2015090915594960972.jpg https://assets.asklib.com/psource/2015090915595746460.jpg https://assets.asklib.com/psource/2015090916000549371.jpg
根据MRI表现，最可能的诊断是（） https://assets.asklib.com/psource/2015111616004868443.jpg https://assets.asklib.com/psource/2015111616005062793.jpg https://assets.asklib.com/psource/2015111616005257792.jpg https://assets.asklib.com/psource/2015111616005574757.jpg
有关系R和S如下图所示，关系代数运算 https://assets.asklib.com/images/image2/2017062911245371956.jpg 的结果是（） https://assets.asklib.com/images/image2/2017062911252713878.jpg
https://assets.asklib.com/source/38811447839673723.png https://assets.asklib.com/source/21771447839683358.png https://assets.asklib.com/source/37171447839689839.png
https://assets.asklib.com/source/1473055371137024152.png 、 https://assets.asklib.com/source/1473055385722092841.png 、 https://assets.asklib.com/source/1473055399690044180.png 、 https://assets.asklib.com/source/1473055413490018042.png 、（）
常见的椎管内肿瘤（如图所示）有（） https://assets.asklib.com/psource/2015083009411414972.jpg https://assets.asklib.com/psource/2015083009411712420.jpg https://assets.asklib.com/psource/2015083009411964955.jpg https://assets.asklib.com/psource/2015083009412254926.jpg
如图箭头所示为大脑哪个部位（） https://assets.asklib.com/psource/2015111710480467521.gif https://assets.asklib.com/psource/2015111710481386329.gif https://assets.asklib.com/psource/2015111710481660241.gif https://assets.asklib.com/psource/2015111710481987584.gif
已知边长 https://assets.asklib.com/psource/2016071710544941816.jpg ，方位角 https://assets.asklib.com/psource/2016071710545061361.jpg ，则 https://assets.asklib.com/psource/201607171054531993.jpg 和 https://assets.asklib.com/psource/2016071710545561685.jpg 分别为：()
图示三力矢 https://assets.asklib.com/psource/2015110210014063428.png 1、 https://assets.asklib.com/psource/2015110210014063428.png 2、 https://assets.asklib.com/psource/2015110210014063428.png 3的关系是（）。 https://assets.asklib.com/psource/2015110210023161678.png
请判断下列符号表示何种二级管。 https://assets.asklib.com/psource/2015061816500188250.jpg https://assets.asklib.com/psource/2015061816501092569.jpg https://assets.asklib.com/psource/2015061816501236941.jpg https://assets.asklib.com/psource/2015061816501482045.jpg
微分方程 https://assets.asklib.com/psource/2015110115590070639.png + https://assets.asklib.com/psource/2015110115590070639.png 6′+9 https://assets.asklib.com/psource/2015110115590070639.png ＝0的通解为 https://assets.asklib.com/psource/2015110115590070639.png ＝（）。
设有学生信息关系STUDENT（sno，sname，sex，age，dept）。“查找信息系（IS系）中年龄小于20岁的学生的姓名”，该操作正确的关系代数表达式是（）。https://assets.asklib.com/images/image2/201807111511404822.jpg
1https://assets.asklib.com/source/1470361829907038628.png https://assets.asklib.com/source/1470361792608072582.png https://assets.asklib.com/source/1470361800727081642.png ( )
若对关系R（A，B，C，D）和S（C，D，E）进行关系代数运算，则表达式 https://assets.asklib.com/psource/2016091808594365716.gif 与（）等价。
如图，下面解剖标志正确的是 https://assets.asklib.com/psource/20140512093522905.jpg https://assets.asklib.com/psource/2014051209353999618.jpg https://assets.asklib.com/psource/2014051209354354276.jpg https://assets.asklib.com/psource/2014051209354796747.jpg
0,https://assets.asklib.com/source/1470294789860044047.png , https://assets.asklib.com/source/1470294797629070776.png , https://assets.asklib.com/source/1470294805275061167.png , https://assets.asklib.com/source/1470294812835026599.png , ( )
https://assets.asklib.com/source/1473040973362041513.png 、 https://assets.asklib.com/source/1473041148171008214.png 、 https://assets.asklib.com/source/1473041081070030054.png 、 https://assets.asklib.com/source/1473041081093013547.png 、（）
