一级反应中药物的半衰期公式为() A: t 1/2 = 0. 693/k B: t 1/2? = C 0/2k C: t 1/2? =0. 1054/k D: t 1/2? = 1/C 0k E: t 1/2? =0. 693 k
一级反应中药物的半衰期公式为() A: t 1/2 = 0. 693/k B: t 1/2? = C 0/2k C: t 1/2? =0. 1054/k D: t 1/2? = 1/C 0k E: t 1/2? =0. 693 k
图中的力F对点o的矩是多少?[img=249x269]17da5a1a0d26dca.png[/img] A: 0,Fl,Fb B: 0,Fl,-Fb C: Fl,Fl,Fb D: 0,-Fl,Fb
图中的力F对点o的矩是多少?[img=249x269]17da5a1a0d26dca.png[/img] A: 0,Fl,Fb B: 0,Fl,-Fb C: Fl,Fl,Fb D: 0,-Fl,Fb
图示斜梁支座的约束反力为()。【图片】 A: Fx=0,Fy=5.46kN,FB=8.03kN B: Fx=0,Fy=3.86kN,FB=7.14kN C: Fx=0,Fy=8.03kN,FB=5.46kN D: Fx=0,Fy=7.14kN,FB=3.86kN
图示斜梁支座的约束反力为()。【图片】 A: Fx=0,Fy=5.46kN,FB=8.03kN B: Fx=0,Fy=3.86kN,FB=7.14kN C: Fx=0,Fy=8.03kN,FB=5.46kN D: Fx=0,Fy=7.14kN,FB=3.86kN
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]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]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]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]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
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
图中的力F对O点的矩为多少?[img=744x149]1802f3f9672e5e5.png[/img][img=685x233]1802f3f9714e5f8.png[/img][img=735x315]1802f3f97c72df1.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]1802f3f9672e5e5.png[/img][img=685x233]1802f3f9714e5f8.png[/img][img=735x315]1802f3f97c72df1.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]1802f3fdb0a46da.png[/img][img=685x233]1802f3fdbc626cc.png[/img][img=735x315]1802f3fdc7077df.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]1802f3fdb0a46da.png[/img][img=685x233]1802f3fdbc626cc.png[/img][img=735x315]1802f3fdc7077df.png[/img] A: 0,Fl, Fb B: Fl, Fb,0 C: Fb,Fl,0 D: Fl,Fb,0