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单选题 下列经四舍五入得到的近似数中,有四位有效数字的近似数为( )
学科：数值分析
时间：2023-11-22 05:26:22
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题目1多选题
下面哪些是Unity 3D设置导航系统的步骤A. 设置 NavMeshB. 烘焙C. 设置导航代理
题目2多选题
下面哪些是当今主流的三维建模软件A. Unity 3DB. Autodesk 3D Studio MaxC. Cinema 4DD. Autodesk Maya
题目3判断题
Unity 3D 不仅具有导航功能,还使用了navigation meshes,这比手动放置节点更有效率而且更流畅A. 正确B. 错误
题目4判断题
Unity 3D支持FBX文件和OBJ文件A. 正确B. 错误
题目5单选题
计算<img src="https://tihai-oss-cloud.itihey.com/img/3ff72adaccde5481577e5ea3e183d930.png">,取<img src="https://tihai-oss-cloud.itihey.com/img/5af3d29eef14c8255d44b659b6fe341c.png">,下列计算式子中结果最好的是( )A. <img src="https://tihai-oss-cloud.itihey.com/img/7395e80bba9ccbd225e6bc47c657a416.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/4a4820f0506e13ed7f806d19b08d563b.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/f1c654cd3e557d53fb21f6522e6b2ae0.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/a4d9519ba9777ca9ca07a52a36903725.png">
题目6单选题
根据数值运算误差分析的方法和原则,无需避免的是( )A. 绝对值很大的数加上绝对值很小的数B. 两个非常相近的数相乘C. 两个非常相近的数相减D. 绝对值很大的数除以绝对值很小的数
题目7单选题
设x是精确值x*的近似值,x-x*称为近似值x的( )A. 相对误差B. 绝对误差限C. 相对误差限D. 绝对误差
题目8单选题
下列经四舍五入得到的近似数中,有四位有效数字的近似数为( )A. 0.069030B. 0.0069300C. 0.693D. 0.6930
题目9单选题
已知准确值<img src="https://tihai-oss-cloud.itihey.com/img/734cb0ec048bc0b1f4fac4991ffde3ad.png">与其有n位有效数字的近似值<img src="https://tihai-oss-cloud.itihey.com/img/f77f649aa849ee2f468dc0caa5458bcc.png">(<img src="https://tihai-oss-cloud.itihey.com/img/cd76437d108a7e9ddc20bb985a94b2cf.png">,<img src="https://tihai-oss-cloud.itihey.com/img/a5d2a4ec7245f49cc6948a81166055d2.png">)的绝对误差<img src="https://tihai-oss-cloud.itihey.com/img/eff879e7aff256b65c1a2088ac36ab64.png">( )A. <img src="https://tihai-oss-cloud.itihey.com/img/3d0ecebc37c79dc3341cac444434294d.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/a2ed096afb31dd91323e5dcdaef8d5d1.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/f26a88458abd845ddcc08f6758e4bc46.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/bc930ff8ad93b75265b6709f953931b3.png">
题目10单选题
准确值<img src="https://tihai-oss-cloud.itihey.com/img/0bf8aba2c13f53b469186ee4274cb10b.png">与其有<img src="https://tihai-oss-cloud.itihey.com/img/1dac517aff62a020fcb3bbd85e78ab3f.png">位有效数字的近似值<img src="https://tihai-oss-cloud.itihey.com/img/9ce7dffaa1a18f3b1eebca0d9317bf2d.png">(<img src="https://tihai-oss-cloud.itihey.com/img/4732c146c0b232a57b895860e5176472.png">,<img src="https://tihai-oss-cloud.itihey.com/img/b9156bf47fed51f40eb824b865da22c3.png">)的绝对误差<img src="https://tihai-oss-cloud.itihey.com/img/0ceb540740c182d31c6d173de8aaa437.png">( )A. <img src="https://tihai-oss-cloud.itihey.com/img/b77dccb807c1b79323ec0591533a6112.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/180b7f49df2e116050e24cebca4df33f.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/4b4cdf2e360b26c645a9b79b62092838.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/2edde18a6e795bb09e2f27fbd09f8b33.png">
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