将x=5,y=7代入方程kx-2y=0得:5k-14=0,
解得:k=145.
故答案为:145.
On April Fool's Day, you should be careful not to be ________ when others try to play tricks on you.[ ]
A. taken up
B. taken down
C. taken out
D. taken in
我国医院病床与病案管理人员合理的配比不应少于()。
A.20:1
B.50:1
C.70:1
D.100:1
E.250:1