下面螺纹画法图中，表达正确的是（ ）
A: [img=146x150]180330390525607.png[/img]
B: [img=144x156]180330390ea0338.png[/img]
C: [img=141x144]180330391b0bfc4.png[/img]
D: [img=140x149]1803303925c4781.png[/img]
A: [img=146x150]180330390525607.png[/img]
B: [img=144x156]180330390ea0338.png[/img]
C: [img=141x144]180330391b0bfc4.png[/img]
D: [img=140x149]1803303925c4781.png[/img]
举一反三
- 下面螺纹画法图中，表达正确的是（ ） A: [img=146x150]1803b3c72365ee3.png[/img] B: [img=144x156]1803b3c72d033f6.png[/img] C: [img=141x144]1803b3c73869be1.png[/img] D: [img=140x149]1803b3c74249d27.png[/img]
- 下列4个集合中是空集的是（） A: ｛x|[img=18x22]1802f060e2f728f.png[/img]+1=0｝ B: ｛x|[img=18x22]1802f060e2f728f.png[/img]<-x｝ C: ｛x|[img=18x22]1802f060e2f728f.png[/img]=0｝ D: ｛x|[img=18x22]1802f060e2f728f.png[/img]-1=0｝
- 下列4个集合中是空集的是（） A: ｛x|[img=18x22]1803d021d498831.png[/img]+1=0｝ B: ｛x|[img=18x22]1803d021d498831.png[/img]<-x｝ C: ｛x|[img=18x22]1803d021d498831.png[/img]=0｝ D: ｛x|[img=18x22]1803d021d498831.png[/img]-1=0｝
- 下列4个集合中是空集的是（） A: ｛x|[img=18x22]1803d0240bcad39.png[/img]+1=0｝ B: ｛x|[img=18x22]1803d0240bcad39.png[/img]-x｝ C: ｛x|[img=18x22]1803d0240bcad39.png[/img]=0｝ D: ｛x|[img=18x22]1803d0240bcad39.png[/img]-1=0｝
- Which of the following propositions is false,set A = {x,x is an integer and[img=60x23]1803a1c6eebb7a3.png[/img]} ? ( ) A: [img=113x25]1803a1c6f77ce06.png[/img] B: [img=139x25]1803a1c7001fe79.png[/img] C: [img=51x22]1803a1c70863f61.png[/img] D: {x|x is an integer and |x| 4}[img=33x22]1803a1c711a7c63.png[/img]