C1:x^2=2py(p>0)①的交点是F(0,p/2),
C2:x^2/3-y^2=1的右焦点是F'(2,0),
FF':y=(-p/4)x+p/2交C1于第一象限的点M(p[√(p^2+16)-p]/4,*),
由①,y'=x/p,
C1在点M处的切线平行于C2的一条渐近线,
∴[√(p^2+16)-p]/4=1/√3,
∴√(p^2+16)=p+4/√3,
平方得p^2+16=p^2+8p/√3+16/3,
32/3=8p/√3,
∴p=4√3/3.选D.
C1:x^2=2py(p>0)①的交点是F(0,p/2),
C2:x^2/3-y^2=1的右焦点是F'(2,0),
FF':y=(-p/4)x+p/2交C1于第一象限的点M(p[√(p^2+16)-p]/4,*),
由①,y'=x/p,
C1在点M处的切线平行于C2的一条渐近线,
∴[√(p^2+16)-p]/4=1/√3,
∴√(p^2+16)=p+4/√3,
平方得p^2+16=p^2+8p/√3+16/3,
32/3=8p/√3,
∴p=4√3/3.选D.