某三相对称负载作星形连接,已知iU=10sin(ωt-30°)A,则C相的线电流为()。 A: iw=10sin(ωt-150°)A B: iW=10sin(ωt+90°)A C: iw=10sin(ωt)A D: iW=10sin(ωt+120°)A
某三相对称负载作星形连接,已知iU=10sin(ωt-30°)A,则C相的线电流为()。 A: iw=10sin(ωt-150°)A B: iW=10sin(ωt+90°)A C: iw=10sin(ωt)A D: iW=10sin(ωt+120°)A
下列各电对中,标准电极电势值最大的是 未知类型：{'options': ['[tex=9.429x1.571]lj2bMQqi5z3WNQ4id/iW/rMk7yhx/R1LWLR9j//6LXGkI7n51y5EkmWR42cGjPmFKFHgrQCUI7Jxs+p4qck7yA==[/tex]', '[tex=10.0x1.571]lj2bMQqi5z3WNQ4id/iW/t3Ez2SXDfv+4HLr2u4VdkI2m/7ZZXX50vQeeOiAAMvYboHhV8tOf+sGe/WhYH0D4+vsBhVekI95fAqojcYa/40=[/tex]', '[tex=11.714x2.214]lj2bMQqi5z3WNQ4id/iW/t3Ez2SXDfv+4HLr2u4VdkJjW7tsA3sU4DQb2PEauHgWCFsoJ9lZwSMXgN//wjaENwq5si7U1fzPgjZwnrS2Vu+kw5lz2WL6cIFY6UHUhljw[/tex]', '[tex=5.929x1.5]lj2bMQqi5z3WNQ4id/iW/hhVAy/dshMLieH3i4tyfh/fz2/hh3BtTW7pAJ78aMcO[/tex]'], 'type': 102}
下列各电对中,标准电极电势值最大的是 未知类型：{'options': ['[tex=9.429x1.571]lj2bMQqi5z3WNQ4id/iW/rMk7yhx/R1LWLR9j//6LXGkI7n51y5EkmWR42cGjPmFKFHgrQCUI7Jxs+p4qck7yA==[/tex]', '[tex=10.0x1.571]lj2bMQqi5z3WNQ4id/iW/t3Ez2SXDfv+4HLr2u4VdkI2m/7ZZXX50vQeeOiAAMvYboHhV8tOf+sGe/WhYH0D4+vsBhVekI95fAqojcYa/40=[/tex]', '[tex=11.714x2.214]lj2bMQqi5z3WNQ4id/iW/t3Ez2SXDfv+4HLr2u4VdkJjW7tsA3sU4DQb2PEauHgWCFsoJ9lZwSMXgN//wjaENwq5si7U1fzPgjZwnrS2Vu+kw5lz2WL6cIFY6UHUhljw[/tex]', '[tex=5.929x1.5]lj2bMQqi5z3WNQ4id/iW/hhVAy/dshMLieH3i4tyfh/fz2/hh3BtTW7pAJ78aMcO[/tex]'], 'type': 102}
证明下列等式[tex=15.286x1.286]TQ5TXmAMd+M3CHU+ql4uv7AhOAHY7zHyfb9rIaCyNc9KSPfeo8MhrxLyAI1diVnjmLUJezwHemLwmnJy036/Iw==[/tex]
证明下列等式[tex=15.286x1.286]TQ5TXmAMd+M3CHU+ql4uv7AhOAHY7zHyfb9rIaCyNc9KSPfeo8MhrxLyAI1diVnjmLUJezwHemLwmnJy036/Iw==[/tex]
在程序段G73UΔiWΔkRd中，d表示：
在程序段G73UΔiWΔkRd中，d表示：
求解常系数线性微分方程 : [tex=9.571x1.357]5N4fE/+TRNVJnPQE2QZxnl/pCbSVl7Hrof8ITZGc/CqwZRj7gl3iGwr7YlG3YUQkRAQIMc71frwIU4vx4IabWGJY6sY7yxReCOaFUAUe/Iw=[/tex]
求解常系数线性微分方程 : [tex=9.571x1.357]5N4fE/+TRNVJnPQE2QZxnl/pCbSVl7Hrof8ITZGc/CqwZRj7gl3iGwr7YlG3YUQkRAQIMc71frwIU4vx4IabWGJY6sY7yxReCOaFUAUe/Iw=[/tex]
火炬污水池污水排至（）管网中。 A: SD B: RWW C: IW D: WW
火炬污水池污水排至（）管网中。 A: SD B: RWW C: IW D: WW
在Excel中,下列单元格引用中,正确的是() A: XX2=YY3+ZZ4 B: D3=A1+A2 C: E6=$A$1+$B$1 D: C3=A$1+B$1 E: IW3=C$1+C$2
在Excel中,下列单元格引用中,正确的是() A: XX2=YY3+ZZ4 B: D3=A1+A2 C: E6=$A$1+$B$1 D: C3=A$1+B$1 E: IW3=C$1+C$2
已知 [tex=2.143x1.071]XPYuqyrB5+uDR4zwRjgs8A==[/tex] 时 [tex=21.429x1.571]lj2bMQqi5z3WNQ4id/iW/lQ7rbf6ZW7eGIAICZ6VdzecZUhUVtGwfUQXBZGth1o808F/bGt0ZtRrdi61oreZP9UjWbos8aNb/Y3qYVGVZK8yrq7tD9MWV/SWsHNiAY4Rks6+zYBgocQ3xcGnkJlCuQ==[/tex] 试计算 [tex=2.143x1.071]XPYuqyrB5+uDR4zwRjgs8A==[/tex] 时电极 [tex=3.429x1.214]XYLlL4CiD2h6q2Mxfi5Ucaviq9A1Xb/bnjubjpwTRmU=[/tex] 的标准电极电势 [tex=5.929x1.571]lj2bMQqi5z3WNQ4id/iW/iSwfukGcXUelxnuMw5c0h0cCTyl5315ZH5jgmXF6z9T[/tex]。
已知 [tex=2.143x1.071]XPYuqyrB5+uDR4zwRjgs8A==[/tex] 时 [tex=21.429x1.571]lj2bMQqi5z3WNQ4id/iW/lQ7rbf6ZW7eGIAICZ6VdzecZUhUVtGwfUQXBZGth1o808F/bGt0ZtRrdi61oreZP9UjWbos8aNb/Y3qYVGVZK8yrq7tD9MWV/SWsHNiAY4Rks6+zYBgocQ3xcGnkJlCuQ==[/tex] 试计算 [tex=2.143x1.071]XPYuqyrB5+uDR4zwRjgs8A==[/tex] 时电极 [tex=3.429x1.214]XYLlL4CiD2h6q2Mxfi5Ucaviq9A1Xb/bnjubjpwTRmU=[/tex] 的标准电极电势 [tex=5.929x1.571]lj2bMQqi5z3WNQ4id/iW/iSwfukGcXUelxnuMw5c0h0cCTyl5315ZH5jgmXF6z9T[/tex]。
由三端集成稳压器7805组成的电路如图5．5．4(a)、(b)所示。设图中IW=5mA。
由三端集成稳压器7805组成的电路如图5．5．4(a)、(b)所示。设图中IW=5mA。
已知,[tex=4.786x1.5]uLkXp9P9C7cdv5SK0W7wiuyuPCZ14wOjEzHc75VWL9biBHBrAazjSH/I2FRxFHSd[/tex]:[tex=7.0x1.429]KXGmStTwiJ0POnQhBIMOB8mWptldjrxNUCfyC3z4vuzb1yNDPTJNxsjV4X0gYWu4[/tex];[tex=2.286x1.214]KQ8VysFEeiAny928WmsazA==[/tex]:[tex=7.643x1.643]tz4i2vblxXKjVXDEWfebkPOgr9MRg6kQracrrL3zS9y3EIGD9mlC+GOg124HGh/O[/tex];[tex=3.857x1.214]q6Eu++DQ6vPOMIhrSf5w+GGs3qK43rW/CvUqr2iOYtw=[/tex]:[tex=6.857x1.643]tz4i2vblxXKjVXDEWfebkBcs8L+bdy0RaIavC7ru1vNLDe74nAOP45mWkgTVsPX6[/tex].用"大于"或"小于"填空.(1)[tex=9.071x1.571]lj2bMQqi5z3WNQ4id/iW/tdGeN+/Mw6SscHKkfoSKtYqCSV6OAdu5cSWfVSY2CHiH8lZV175ZPESrGxuyFNuTwubDC6ySdPWPuviPEjNTqU=[/tex][input=type:blank,size:4][/input][tex=7.929x1.429]lj2bMQqi5z3WNQ4id/iW/uioYVIojwQ0fcv4nuotamZJuXEhUXmptRmWKGtZDI+XNa+hiv4E1KGPt3PpPFETBA==[/tex];(2)[tex=7.929x1.429]lj2bMQqi5z3WNQ4id/iW/uioYVIojwQ0fcv4nuotamZJuXEhUXmptRmWKGtZDI+XNa+hiv4E1KGPt3PpPFETBA==[/tex][input=type:blank,size:4][/input][tex=6.143x1.429]LwpUc0F2/AkjKThIxrDF2fGwA3I5ofhOQ1V+C4KoUrA=[/tex].
已知,[tex=4.786x1.5]uLkXp9P9C7cdv5SK0W7wiuyuPCZ14wOjEzHc75VWL9biBHBrAazjSH/I2FRxFHSd[/tex]:[tex=7.0x1.429]KXGmStTwiJ0POnQhBIMOB8mWptldjrxNUCfyC3z4vuzb1yNDPTJNxsjV4X0gYWu4[/tex];[tex=2.286x1.214]KQ8VysFEeiAny928WmsazA==[/tex]:[tex=7.643x1.643]tz4i2vblxXKjVXDEWfebkPOgr9MRg6kQracrrL3zS9y3EIGD9mlC+GOg124HGh/O[/tex];[tex=3.857x1.214]q6Eu++DQ6vPOMIhrSf5w+GGs3qK43rW/CvUqr2iOYtw=[/tex]:[tex=6.857x1.643]tz4i2vblxXKjVXDEWfebkBcs8L+bdy0RaIavC7ru1vNLDe74nAOP45mWkgTVsPX6[/tex].用"大于"或"小于"填空.(1)[tex=9.071x1.571]lj2bMQqi5z3WNQ4id/iW/tdGeN+/Mw6SscHKkfoSKtYqCSV6OAdu5cSWfVSY2CHiH8lZV175ZPESrGxuyFNuTwubDC6ySdPWPuviPEjNTqU=[/tex][input=type:blank,size:4][/input][tex=7.929x1.429]lj2bMQqi5z3WNQ4id/iW/uioYVIojwQ0fcv4nuotamZJuXEhUXmptRmWKGtZDI+XNa+hiv4E1KGPt3PpPFETBA==[/tex];(2)[tex=7.929x1.429]lj2bMQqi5z3WNQ4id/iW/uioYVIojwQ0fcv4nuotamZJuXEhUXmptRmWKGtZDI+XNa+hiv4E1KGPt3PpPFETBA==[/tex][input=type:blank,size:4][/input][tex=6.143x1.429]LwpUc0F2/AkjKThIxrDF2fGwA3I5ofhOQ1V+C4KoUrA=[/tex].