简单立方晶格，设晶格常数为a，([img=27x22]180392309bd8791.png[/img])晶面间距和[[img=27x22]180392309bd8791.png[/img]]晶向原子排列周期分别为？
A: [img=53x29]18039230ad4553c.png[/img]，[img=35x26]18039230b5ce3ab.png[/img]
B: [img=35x26]18039230b5ce3ab.png[/img]，[img=35x26]18039230b5ce3ab.png[/img]
C: [img=53x29]18039230ad4553c.png[/img]，[img=53x29]18039230ad4553c.png[/img]
D: [img=35x26]18039230b5ce3ab.png[/img]，[img=53x29]18039230ad4553c.png[/img]
A: [img=53x29]18039230ad4553c.png[/img]，[img=35x26]18039230b5ce3ab.png[/img]
B: [img=35x26]18039230b5ce3ab.png[/img]，[img=35x26]18039230b5ce3ab.png[/img]
C: [img=53x29]18039230ad4553c.png[/img]，[img=53x29]18039230ad4553c.png[/img]
D: [img=35x26]18039230b5ce3ab.png[/img]，[img=53x29]18039230ad4553c.png[/img]
举一反三
- 不等式[img=146x24]18031ef3f198106.png[/img]的解集是() A: {x|－3＜x＜5} B: R C: {x|x＞5或x＜－3} D: {x|－5＜x＜3}
- fcc铜（设晶格常数为a）最近邻原子的距离为 。 A: [img=53x29]18030ad6368fe4c.png[/img] B: [img=53x29]18030ad63e6efd2.png[/img] C: [img=28x25]18030ad646de893.png[/img] D: [img=28x25]18030ad64f0d580.png[/img]
- 当同一反应有两种写法时：[img=225x25]18033db9f1efeb3.png[/img] [img=53x29]18033db9faff841.png[/img][img=229x43]18033dba0605d45.png[/img] [img=53x29]18033dba0e82a97.png[/img]则[img=53x29]18033db9faff841.png[/img]和[img=53x29]18033dba0e82a97.png[/img]的关系是 A: [img=53x29]18033dba2b71340.png[/img] = [img=53x29]18033dba337d11b.png[/img] B: [img=53x29]18033dba2b71340.png[/img] = [img=73x29]18033dba431928c.png[/img] C: [img=53x29]18033dba2b71340.png[/img] = [img=9x43]18033dba54205d8.png[/img][img=53x29]18033dba337d11b.png[/img] D: [img=53x29]18033dba2b71340.png[/img] = 2[img=53x29]18033dba337d11b.png[/img]
- 当同一反应有两种写法时：[img=225x25]18033dbb7069038.png[/img][img=53x29]18033dbb7877af0.png[/img][img=229x43]18033dbb81f66f2.png[/img][img=53x29]18033dbb891b004.png[/img]则[img=53x29]18033dbb7877af0.png[/img]和[img=53x29]18033dbb891b004.png[/img]的关系是 A: [img=53x29]18033dbba2bed47.png[/img] = [img=53x29]18033dbbaae6e72.png[/img] B: [img=53x29]18033dbba2bed47.png[/img] = [img=73x29]18033dbbbb3f704.png[/img] C: [img=53x29]18033dbba2bed47.png[/img] = [img=9x43]18033dbbcb78295.png[/img][img=53x29]18033dbbaae6e72.png[/img] D: [img=53x29]18033dbba2bed47.png[/img] = 2[img=53x29]18033dbbaae6e72.png[/img]
- 设3阶矩阵A=[img=84x75]17e4469abd0519e.png[/img]，b=[img=29x75]17e4469ac7ba50a.png[/img]，且Ab与b线性相关，则x=____。