判断螺柱连接装配画法的对错，答案正确应该是：
A: [img=228x505]1803d75f7136a23.jpg[/img]
B: [img=223x503]1803d75f7fc1651.jpg[/img]
C: [img=218x503]1803d75f8d425f3.jpg[/img]
D: [img=218x507]1803d75f9b1fe35.jpg[/img]
A: [img=228x505]1803d75f7136a23.jpg[/img]
B: [img=223x503]1803d75f7fc1651.jpg[/img]
C: [img=218x503]1803d75f8d425f3.jpg[/img]
D: [img=218x507]1803d75f9b1fe35.jpg[/img]
举一反三
- 判断螺柱连接装配画法的对错，答案正确应该是： A: [img=228x505]180356b8b829366.jpg[/img] B: [img=223x503]180356b8c69c82a.jpg[/img] C: [img=218x503]180356b8d33d933.jpg[/img] D: [img=218x507]180356b8dfc18ed.jpg[/img]
- 判断螺柱连接装配画法的对错，答案正确应该是： A: [img=228x505]1803d0de3e7c5ba.jpg[/img] B: [img=223x503]1803d0de4cb8175.jpg[/img] C: [img=218x503]1803d0de592ae03.jpg[/img] D: [img=218x507]1803d0de663163e.jpg[/img]
- 判断螺柱连接装配画法的对错，答案正确应该是： A: [img=228x505]18036e402501d3a.jpg[/img] B: [img=223x503]18036e40339634a.jpg[/img] C: [img=218x503]18036e40420c468.jpg[/img] D: [img=218x507]18036e404febc48.jpg[/img]
- 在下列命题中:如果f(x)=[img=28x44]17e0bf9914bb2f1.png[/img],那么[img=27x29]17e0bf97582597b.png[/img]f(x)=0;如果f(x)=[img=28x44]17e0bf992111a1c.png[/img],那么[img=27x29]17e0bf97582597b.png[/img]f(x)=0;如果f(x)=[img=55x44]17e0bf992d8de0a.png[/img],那么[img=29x29]17e0bf9939482bb.png[/img]f(x)不存在;如果f(x)=[img=87x53]17e0bf99450fa82.png[/img],那么[img=27x29]17e0bf97582597b.png[/img]f(x)=0。其中错误命题的个数是( A: 0 B: 1 C: 2 D: 3
- 设随机变量X的概率密度为f(x)，则f(x)一定满足( ). A: 0≤f(x)≤1 B: [img=183x53]1803b451bb3373a.png[/img] C: [img=133x51]1803b451c807078.png[/img] D: f(+∞)=1