在空间直角坐标系下,方程2x2+3y2=6表示的图形为( )A. 椭圆 B. 柱面 C. 旋转抛物面 D. 球面 E. 2.极限limarcsin(x+y^2)= ()-|||-arrow 0-|||-A. dfrac (pi )(6)-|||-B. dfrac (pi )(3)-|||-C. dfrac (pi )(2)-|||-D.π-|||-3.设积分区域 :(x)^2-(y)^2=5(R)^2 0≤z≤1, 则三重积分 iint f((x)^2-(y)^2)dxdxyd= ()-|||-A. (int )_(0)^2pi dtheta (int )_(0)^Rd(int )_(0)^1f((r)^2)dz-|||-B. (int )_(0)^2pi dtheta (int )_(0)^Rrho a(b)^1f((r)^2)dz-|||-C. (int )_(0)^2pi dtheta (int )_(0)^kd(x)^1(int )_(0)^1f((x)^2-(y)^2)ydz-|||-D. (int )_(0)^pi dtheta (int )_(0)^krab(int )_(0)^1f((r)^2)dz2.极限limarcsin(x+y^2)= ()-|||-arrow 0-|||-A. dfrac (pi )(6)-|||-B. dfrac (pi )(3)-|||-C. dfrac (pi )(2)-|||-D.π-|||-3.设积分区域 :(x)^2-(y)^2=5(R)^2 0≤z≤1, 则三重积分 iint f((x)^2-(y)^2)dxdxyd= ()-|||-A. (int )_(0)^2pi dtheta (int )_(0)^Rd(int )_(0)^1f((r)^2)dz-|||-B. (int )_(0)^2pi dtheta (int )_(0)^Rrho a(b)^1f((r)^2)dz-|||-C. (int )_(0)^2pi dtheta (int )_(0)^kd(x)^1(int )_(0)^1f((x)^2-(y)^2)ydz-|||-D. (int )_(0)^pi dtheta (int )_(0)^krab(int )_(0)^1f((r)^2)dz F. 2.极限limarcsin(x+y^2)= ()-|||-arrow 0-|||-A. dfrac (pi )(6)-|||-B. dfrac (pi )(3)-|||-C. dfrac (pi )(2)-|||-D.π-|||-3.设积分区域 :(x)^2-(y)^2=5(R)^2 0≤z≤1, 则三重积分 iint f((x)^2-(y)^2)dxdxyd= ()-|||-A. (int )_(0)^2pi dtheta (int )_(0)^Rd(int )_(0)^1f((r)^2)dz-|||-B. (int )_(0)^2pi dtheta (int )_(0)^Rrho a(b)^1f((r)^2)dz-|||-C. (int )_(0)^2pi dtheta (int )_(0)^kd(x)^1(int )_(0)^1f((x)^2-(y)^2)ydz-|||-D. (int )_(0)^pi dtheta (int )_(0)^krab(int )_(0)^1f((r)^2)dz2.极限limarcsin(x+y^2)= ()-|||-arrow 0-|||-A. dfrac (pi )(6)-|||-B. dfrac (pi )(3)-|||-C. dfrac (pi )(2)-|||-D.π-|||-3.设积分区域 :(x)^2-(y)^2=5(R)^2 0≤z≤1, 则三重积分 iint f((x)^2-(y)^2)dxdxyd= ()-|||-A. (int )_(0)^2pi dtheta (int )_(0)^Rd(int )_(0)^1f((r)^2)dz-|||-B. (int )_(0)^2pi dtheta (int )_(0)^Rrho a(b)^1f((r)^2)dz-|||-C. (int )_(0)^2pi dtheta (int )_(0)^kd(x)^1(int )_(0)^1f((x)^2-(y)^2)ydz-|||-D. (int )_(0)^pi dtheta (int )_(0)^krab(int )_(0)^1f((r)^2)dz全国2010年10月高等教育政治经济学(财)自考试题

在空间直角坐标系下,方程2x2+3y2=6表示的图形为( )

A. 椭圆
B. 柱面
C. 旋转抛物面
D. 球面
E.
F. 全国2010年10月高等教育政治经济学(财)自考试题