《客车辅（A1）修限度表》中规定，轮缘垂直磨耗限度为（）mm。
A.0
B.3
C.8
D.15
参考答案：A
如图254所示起吊质量m＝500kg的电流互感器，不计摩擦系数，求F1、F2大小？
A Swiss firm can borrow in Switzerland at 10 percent and in the U. S. at 8.5 percent. A U. S. firm can borrow in Switzerland at 10.5 percent and in the U. S. at 8.5 percent. Which firm has a comparative advantage in which currency The:()
A. Swiss firm has a comparative advantage borrowing in the U. S.
B. Swiss firm has a comparative advantage borrowing in Switzerland.
C. U.S. firm has a comparative advantage in borrowing in the U. S.
