A: 标准花样对照法
B:
比值法C: 按未知晶体结构进行标定
D: 尝试校核法
举一反三
- 多晶样品电子衍射花样的标定方法有 A: d值法 B: 比值(规律)法 C: 尝试-校核法 D: 标准花样对照法
- 体系由状态1可逆变化到状态2，该过程㶲变化等于（ ） A: <img src="https://image.zhihuishu.com/zhs/app/uploadimage/202104/bf6b0fd8a6a24fad84e9128458090317.jpg" data-latex="{T}_{0}S"/> B: <img src="https://image.zhihuishu.com/zhs/app/uploadimage/202104/aca1b1725b4d4e6782ec78883d62b955.jpg" data-latex="{W}_{id}"/> C: <img src="https://image.zhihuishu.com/zhs/app/uploadimage/202104/3cd40c29d95c47c3a33b2e1b040ea270.jpg" data-latex="{-W}_{id}"/> D: <img src="https://image.zhihuishu.com/zhs/app/uploadimage/202104/3b7917b286704569ba9b7f5320c1467b.jpg" data-latex="{W}_{L}"/>
- 设集合A={1,2,3} 到B={a,b,c,d} 的关系 f= {＜1,a＞, ＜2,b＞, ＜3,d＞}，则下列说法正确的是（ ）。 A: f是一个双射函数 B: <img src="https://image.zhihuishu.com/zhs/app/uploadimage/202103/38e87af32e9445dfb9eeacd5f1db60c3.jpg" data-latex="{f}^{-1}是一个函数"/> C: <img src="https://image.zhihuishu.com/zhs/app/uploadimage/202103/3662f0075ef14f888aa09956e532bec5.jpg" data-latex="{f}^{-1}=\{ <a,1>,<b,2>,<d,3>\} "/> D: f是一个单射函数
- 关于逸度系数的描述不正确的是（ ） A: <img src="https://image.zhihuishu.com/zhs/app/uploadimage/202104/1b6b41d63e2e46a38857469a12285e55.jpg" data-latex="{\phi }_{i}"/>—表示真实气体与理想气体的偏差 B: <img src="https://image.zhihuishu.com/zhs/app/uploadimage/202104/aaf088eb28cf4ec0ad28d73b6d5bd164.jpg" data-latex="{\phi }_{i}<1"/>—分子间有较强吸引力 C: 其他选项均不正确 D: <img src="https://image.zhihuishu.com/zhs/app/uploadimage/202104/f8a0687bacdb489ea9207b69e729a78d.jpg" data-latex="{\phi }_{i}>1"/>—分子间有较强排斥力
- <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/eeda346633f5425ab4482d83df8182a7.png" />用位移法计算图示刚架结构，下列内力计算选项正确的是（ ） A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/13d1ec532cc14b858e1edc9aedb9cc6c.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/e3c8e9de91074f92bdd8a4979fea19a2.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/21189921d7064cce807070431cd018a7.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/7bbedae8f3ee4b28a7f3f40dbc38cda2.png" />
内容
- 0
一个面心立方紧密堆积的金属晶体，其原子量为M，密度是<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/2801427280334c6b991350d3ed0bceaa.png" />。试计算其晶格常数为__nm。( ) A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/203b541fd68a4d798ffe2a2a2c78c16c.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/fce78b5bce444972983ddd1c6c2f3bb6.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/04bcf546d9ec4078b918fb5ac242a2e4.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/f14a5bc8801843e68cae7c1f8188bfb3.png" />
- 1
<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/b4672b87107445c0978de191fa119efd.png"/>用位移法计算图示对称结构。各杆EI=常数。下列选项错误的是（ ） A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/30d417fb469c4bed94079d25513062de.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/160eda74dac74a2fb3a403918da72123.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/fa4d77df2cbb41508f8f0874d3a0a16a.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/bf5b181844ba40c394a4a636138d90bd.png" />
- 2
<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/9e1758fc408642e5b65ad96005c5343d.png" />用力法计算图示桁架结构，并求指定杆件的内力。已知各杆EA=常数。下列选项正确的是（ ） A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/381351aae1e343d4a83378d50dfb3f3f.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/e303b05f137d4f8b8f9e731cef7dbb5e.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/604c205bceef42009d1bd9e598022a20.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/e5d7282c479e40539d88dc09d897d256.png" />
- 3
具有顺反异构体的物质是 ( ) 。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/9bf08e194cf24f80b9582238a48b2d98.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/6a33a313aebe4d5a8d8f6cd250361fec.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/f7a33598bdb74c3180f03e2517cac29c.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/d86d498d7c6b4594ad58fdbaad86028c.png" />
- 4
<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/c41f262ea5014597ae40b4dfc9074dcd.png" />用位移法计算图示刚架由支座移动引起的内力。各杆<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/1f20f3ffaad94769b3e7340c77916a42.png" />。下列选项错误的是（ ） A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/f66530ad4965479096c911a53a950211.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/92126acdd09f4686a1090e5acf3b3644.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/5e3db21f3771422e8925a94bb39f5458.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/a5e7e30e19f143fe94631a9acf072c5a.png" />