冷冲模具应有的力学性能是什么?
参考答案:
(1)应有较高的变形抗力。
(2)应有较高的断裂抗力。
(3)应有较高的耐磨性及抗疲劳性能。
(4)应有较好的冷、热加工工艺性。
—I like drinking wine. But people who drink wine aren't allowed to drive.
—If I _____ you, I would give up _____ wine.[ ]
A. were; drinking
B. am; drinking
C. were; drink
D. was; to drink
请简要回答什么是通信设备出租产品?