设[img=49x25]1802fb0c242a93a.png[/img]是连续函数，交换二次积分[img=163x52]1802fb0c2eed8d2.png[/img]积分次序的结果为
A: [img=163x52]1802fb0c3913d3e.png[/img]
B: [img=150x51]1802fb0c43e69f4.png[/img]
C: [img=163x52]1802fb0c4e9e964.png[/img]
D: [img=150x51]1802fb0c595e3c6.png[/img]
A: [img=163x52]1802fb0c3913d3e.png[/img]
B: [img=150x51]1802fb0c43e69f4.png[/img]
C: [img=163x52]1802fb0c4e9e964.png[/img]
D: [img=150x51]1802fb0c595e3c6.png[/img]
举一反三
- 图中的力F对O点的矩为多少？[img=744x149]18036e09021933f.png[/img][img=685x233]18036e090d730fc.png[/img][img=735x315]18036e0919b7d9d.png[/img] A: 0，Fl, Fb B: Fl, Fb,0 C: Fb,Fl,0 D: Fl,Fb,0
- 图中的力F对O点的矩为多少？[img=744x149]18036264958edca.png[/img][img=685x233]18036264a0a5ed0.png[/img][img=735x315]18036264ac698ce.png[/img] A: 0，Fl, Fb B: Fl, Fb,0 C: Fb,Fl,0 D: Fl,Fb,0
- 图中的力F对O点的矩为多少？[img=744x149]1802f3fa5d08ce2.png[/img][img=685x233]1802f3fa67fe3e8.png[/img][img=735x315]1802f3fa7529558.png[/img] A: 0，Fl, Fb B: Fl, Fb,0 C: Fb,Fl,0 D: Fl,Fb,0
- 图中的力F对O点的矩为多少？[img=744x149]18035d1c6fd7961.png[/img][img=685x233]18035d1c7ab1df4.png[/img][img=735x315]18035d1c859b5d7.png[/img] A: 0，Fl, Fb B: Fl, Fb,0 C: Fb,Fl,0 D: Fl,Fb,0
- 图中的力F对O点的矩为多少？[img=744x149]1802f3f8b9285a5.png[/img][img=685x233]1802f3f8c4edd9d.png[/img][img=735x315]1802f3f8d15814b.png[/img] A: 0，Fl, Fb B: Fl, Fb,0 C: Fb,Fl,0 D: Fl,Fb,0