测量数据的分散性或计量器具的精密度用标准差评估。
用普通计量器具测量中有哪些因素影响测量结果的准确性?
用普通计量器测量 https://assets.asklib.com/psource/2016031017251680502.jpg mm的轴,若安全裕度A=0.006mm,则该轴的上验收极限为()。
修剪工具包括花剪,花艺刀,普通剪刀和手锯。图中的工具属于? <img class="\'import-img\'/" src="\'https://exam-online.oss-cn-beijing.aliyuncs.com/1466237801.64333.jpg\'"/>
普通话<img src='https://img2.soutiyun.com/ask/4917001-4920000/6b9ac88fda7318a3d843b6e7a989d077.jpg' />(深厚)快读是<img src='https://img2.soutiyun.com/ask/4917001-4920000/18a9ba5b216f73663ff546608b4501ea.jpg' />这种现象是( )。
用普通计量器具测量<img src='https://img2.soutiyun.com/ask/2020-02-29/951815154752942.png' />轴。按GB/T 3177—2009的规定,安全裕度为0.0062mm,轴的上验收极限为( )。
用立式光学比较仪测量<img src='https://img2.soutiyun.com/ask/uploadfile/5142001-5145000/147cc35ece627b8160cf425349bfe8e2.png' />25m6轴的方法属于( )。
普通话中的<img src='https://img2.soutiyun.com/ask/4947001-4950000/5f7a37fda07096b2c9f9149ef820c7a0.jpg' />标记称为( )。
用数学归纳法证明:<img src='https://img2.soutiyun.com/ask/2021-02-22/982838635749578.png' />
下列哪种情况可采用腰麻()<img src='https://img2.soutiyun.com/shangxueba/ask/18231001-18234000/18231996/2015112117034133731.jpg' />
用公式化简下列逻辑函数:<img src='https://img2.soutiyun.com/ask/2020-02-20/951082911647957.png' />
普通钢筋混凝土电杆,当电杆直径<img src='https://img2.soutiyun.com/shangxueba/ask/17520001-17523000/17521427/2015051317222823222.jpg' />300mm时,其最小配筋量应为()。
出现唇痈可采用()<img src='https://img2.soutiyun.com/shangxueba/ask/17640001-17643000/17641932/2015111309460675228.jpg' />
用Fe<sup>3+</sup>滴定Sn<sup>2+</sup>,在化学计量点的电位是<img src='https://img2.soutiyun.com/ask/uploadfile/5970001-5973000/a5a5f26d99953b0e6a3f090f144ea546.png' />( )
用肉眼观察星体时,星光通过瞳孔的衍射在视网膜上形成一个小亮斑。<img src='https://img2.soutiyun.com/ask/2020-02-19/950966257814545.png' /><img src='https://img2.soutiyun.com/ask/2020-02-19/950966263684256.png' />
用伏安法测量电阻,已知待测电阻R与电压表的电阻相差不多,而R远大于电流表的内 阻,测量线路应为图3-5中的() A.(a) B.(b) C.(c) D.(d)<img src='https://img2.soutiyun.com/ask/uploadfile/4182001-4185000/1b394246b4687fec341a8e35457e9fa5.jpg' />
对于中等尺寸的矩形和圆形工作台面,其测量线布置如图虚线所示,测量线数量一般取()条,如果测量平面较大或要求较严,可适当增加测量线数目。<img src='https://img2.soutiyun.com/shangxueba/ask/2022-04/13/153/20220413151303872.png' />
矫正乳前牙反<img src='https://img2.soutiyun.com/shangxueba/ask/17562001-17565000/17563979/201509300950473725.jpg' />反覆<img src='https://img2.soutiyun.com/shangxueba/ask/17562001-17565000/17563979/201509300950473725.jpg' />中度,应选用()
用矩阵乘法求连续施以下列线性变换的结果:<img src='https://img2.soutiyun.com/ask/2020-08-12/966093089031208.png' />
一患者321<img src='https://img2.soutiyun.com/shangxueba/ask/18672001-18675000/18672344/2015091115483175416.gif' />35678和65<img src='https://img2.soutiyun.com/shangxueba/ask/18672001-18675000/18672344/2015091115483175416.gif' />678缺失,戴用义齿后出现咬舌现象。原因是人工后牙()
可以直接利用模型上余留牙确定<img src='https://img2.soutiyun.com/shangxueba/ask/17538001-17541000/17540854/2015082211124147883.jpg' />关系的是()。需要用<img src='https://img2.soutiyun.com/shangxueba/ask/17538001-17541000/17540854/2015082211124147883.jpg' />堤确定正中<img src='https://img2.soutiyun.com/shangxueba/ask/17538001-17541000/17540854/2015082211124147883.jpg' />位关系及垂直距离的是()。需要用<img src='https://img2.soutiyun.com/shangxueba/ask/17538001-17541000/17540854/2015082211124147883.jpg' />堤确定正中<img src='https://img2.soutiyun.com/shangxueba/ask/17538001-17541000/17540854/2015082211124147883.jpg' />位关系和中线的是()。需要用蜡<img src='https://img2.soutiyun.com/shangxueba/ask/17538001-17541000/17540854/2015082211124147883.jpg' />记录确定颌位记录的是()。
用仪器测量某零件的长度n次,得到n个略有差别的数:a<sub>1</sub>,a<sub>2</sub>,…,a<sub>n</sub>,证明:用算术平均值<img src='https://img2.soutiyun.com/ask/2020-12-20/977341497733953.png' />作为该零件的长度x的近似值,能使<img src='https://img2.soutiyun.com/ask/2020-12-20/977341503690294.png' />达到最小.
用真值表证明反演律:<img src='https://img2.soutiyun.com/ask/2021-01-21/980081620488771.png' />
用Γ函数表示下列积分,并计算积分值<img src='https://img2.soutiyun.com/ask/2020-08-11/965988508368335.png' />