图示电路中，7 V电压源吸收功率为 （）。[img=255x269]178699b90de5b7d.png[/img] A: 14 W B: -7 W C: -14W D: 7 W

图得再过______分钟是7：w图．3：图得再过______分钟是7：w图．

下列函数中，在定义域内连续的是 未知类型：{'options': ['[tex=10.357x2.786]ACpG7W/lXiEwdW69ASBj8yz3JKPP/kaALPrOFjqtRmoxWlPWiBbHwJTikBQCu/dAu7XoONNXbMh0a2HKXp9+puyYgPb0Ff+jJowwa1YMtD4pzlGMBv4GAK17qySOrBC1[/tex]', '[tex=10.5x4.214]ACpG7W/lXiEwdW69ASBj89VuE0FUo5hY+ev/XmQQZBl5+xTnMkb1goBIXQbu+zt3JY2mip8N58o/Wfy8weO4z5MFQ55lLvPqNNC6oznYMRML0MdTJkwLl7+4W/mJWQdI3SMtX0IOJFrNCt4tmlHLLA==[/tex]', '[tex=10.571x2.786]ACpG7W/lXiEwdW69ASBj87BXbFfvagirDs4JDkgJ4E6Zx9N51St7jSmQZfpm9LcDhF88cGSnuk7vqoofjpzi7UkUa0EnXg0DUUAfvM23agCY7RCD/AFTy46vMr6za0YJ[/tex]', '[tex=9.571x3.357]ACpG7W/lXiEwdW69ASBj8ya2ziUpOkSgOLy4Ggz7czTHCT5C05BW+bT3RMvdNdgPppo5iZbbbpIE0e1W5noaSomeZxGcMgC8FErzfA200fpc/WqJ8maqw80ojVhXOIfZLFH3+ApLULbjLyPXgjLbNg==[/tex]'], 'type': 102}

下列函数中，在定义域内连续的是 未知类型：{'options': ['[tex=10.357x2.786]ACpG7W/lXiEwdW69ASBj8yz3JKPP/kaALPrOFjqtRmoxWlPWiBbHwJTikBQCu/dAu7XoONNXbMh0a2HKXp9+puyYgPb0Ff+jJowwa1YMtD4pzlGMBv4GAK17qySOrBC1[/tex]', '[tex=10.5x4.214]ACpG7W/lXiEwdW69ASBj89VuE0FUo5hY+ev/XmQQZBl5+xTnMkb1goBIXQbu+zt3JY2mip8N58o/Wfy8weO4z5MFQ55lLvPqNNC6oznYMRML0MdTJkwLl7+4W/mJWQdI3SMtX0IOJFrNCt4tmlHLLA==[/tex]', '[tex=10.571x2.786]ACpG7W/lXiEwdW69ASBj87BXbFfvagirDs4JDkgJ4E6Zx9N51St7jSmQZfpm9LcDhF88cGSnuk7vqoofjpzi7UkUa0EnXg0DUUAfvM23agCY7RCD/AFTy46vMr6za0YJ[/tex]', '[tex=9.571x3.357]ACpG7W/lXiEwdW69ASBj8ya2ziUpOkSgOLy4Ggz7czTHCT5C05BW+bT3RMvdNdgPppo5iZbbbpIE0e1W5noaSomeZxGcMgC8FErzfA200fpc/WqJ8maqw80ojVhXOIfZLFH3+ApLULbjLyPXgjLbNg==[/tex]'], 'type': 102}

下列函数中，在定义域内连续的是 未知类型：{'options': ['[tex=10.357x2.786]ACpG7W/lXiEwdW69ASBj8yz3JKPP/kaALPrOFjqtRmoxWlPWiBbHwJTikBQCu/dAu7XoONNXbMh0a2HKXp9+puyYgPb0Ff+jJowwa1YMtD4pzlGMBv4GAK17qySOrBC1[/tex]', '[tex=10.5x4.214]ACpG7W/lXiEwdW69ASBj89VuE0FUo5hY+ev/XmQQZBl5+xTnMkb1goBIXQbu+zt3JY2mip8N58o/Wfy8weO4z5MFQ55lLvPqNNC6oznYMRML0MdTJkwLl7+4W/mJWQdI3SMtX0IOJFrNCt4tmlHLLA==[/tex]', '[tex=10.571x2.786]ACpG7W/lXiEwdW69ASBj87BXbFfvagirDs4JDkgJ4E6Zx9N51St7jSmQZfpm9LcDhF88cGSnuk7vqoofjpzi7UkUa0EnXg0DUUAfvM23agCY7RCD/AFTy46vMr6za0YJ[/tex]', '[tex=9.571x3.357]ACpG7W/lXiEwdW69ASBj8ya2ziUpOkSgOLy4Ggz7czTHCT5C05BW+bT3RMvdNdgPppo5iZbbbpIE0e1W5noaSomeZxGcMgC8FErzfA200fpc/WqJ8maqw80ojVhXOIfZLFH3+ApLULbjLyPXgjLbNg==[/tex]'], 'type': 102}

下列函数中，在定义域内连续的是 未知类型：{'options': ['[tex=10.357x2.786]ACpG7W/lXiEwdW69ASBj8yz3JKPP/kaALPrOFjqtRmoxWlPWiBbHwJTikBQCu/dAu7XoONNXbMh0a2HKXp9+puyYgPb0Ff+jJowwa1YMtD4pzlGMBv4GAK17qySOrBC1[/tex]', '[tex=10.5x4.214]ACpG7W/lXiEwdW69ASBj89VuE0FUo5hY+ev/XmQQZBl5+xTnMkb1goBIXQbu+zt3JY2mip8N58o/Wfy8weO4z5MFQ55lLvPqNNC6oznYMRML0MdTJkwLl7+4W/mJWQdI3SMtX0IOJFrNCt4tmlHLLA==[/tex]', '[tex=10.571x2.786]ACpG7W/lXiEwdW69ASBj87BXbFfvagirDs4JDkgJ4E6Zx9N51St7jSmQZfpm9LcDhF88cGSnuk7vqoofjpzi7UkUa0EnXg0DUUAfvM23agCY7RCD/AFTy46vMr6za0YJ[/tex]', '[tex=9.571x3.357]ACpG7W/lXiEwdW69ASBj8ya2ziUpOkSgOLy4Ggz7czTHCT5C05BW+bT3RMvdNdgPppo5iZbbbpIE0e1W5noaSomeZxGcMgC8FErzfA200fpc/WqJ8maqw80ojVhXOIfZLFH3+ApLULbjLyPXgjLbNg==[/tex]'], 'type': 102}

sw8×他≈得ww×7≈得w×7≈他0八×八≈

下列函数是偶函数的是[input=type:blank,size:4][/input]. 未知类型：{'options': ['[tex=9.286x3.643]ACpG7W/lXiEwdW69ASBj84wONCGbv23xhwGIyFqTAsumsaLLaOPLp6FpSW1UMX0Gm9K8o2gFAXE/UMAJ+wDpH3PFOHNgeXW6RZ6HOAzSmCw=[/tex]', '[tex=9.857x3.643]ACpG7W/lXiEwdW69ASBj87+7IhEyPgxjnozNiWY+F5FCVmrVGthpvvMnxaob+Qb92pGfzCtBsvaCm/l84CFPpAbVRWSXR6JPS51zzh4KLNieV5xnhsANuHgo3gX+tNap[/tex]', '[tex=9.857x2.786]ACpG7W/lXiEwdW69ASBj8+UX23UMM1v4mbi6Bqi0jQvZD0yceFCIz0aJCtdQpNGzCZuXhpycnbRah08fSfOqLpJ4+/bM+gPUFkxHgj9U0dxuFJakOSknrm/WiL9upuNN[/tex]', '[tex=10.286x3.357]ACpG7W/lXiEwdW69ASBj847RnTfW++jmgxeX7+sUfQe8mpHoVdKqKpMbpOAwtjiDWPy55ooLR3toASLM6P+ClY0A7q1Lq/u4C+yi59wzcDNKlIVoF2bvzSptVIw3Cw9H[/tex]'], 'type': 102}

图示机构自由度W的正确计算结果为()。 A: W=3×6-2×8-1=1 B: W=3×9-2×13=1 C: W=3×6-2×7-3=1 D: W=3×5-2×7=1

图示机构自由度W的正确计算结果为（ ）。[img=252x202]1803250cbd915b4.png[/img] A: W=3×6-2×8-1=1 B: W=3×7-2×10=1 C: W=3×5-2×7=1 D: W=3×8-2×11-1=1