import graph3; 

size3(150,IgnoreAspect);
size(8cm,0);

limits((0,0,0),(10,10,4));
currentprojection=perspective(camera=(20,16,7),target=(5,5,2));

xaxis3(Bounds(),OutTicks(endlabel=false),p=blue); 
yaxis3(Bounds(),OutTicks(),p=red);
zaxis3(Bounds(),OutTicks,p=.8green);