心痛定（）
A.扩张静脉，增加冠脉血流
B.减少心肌氧耗量
C.解除冠脉痉挛
D.抗血小板聚积
E.抑制钠离子通道
参考答案：C
特性粘度
According to the passage, what did giant businesses like AT&T, Boise Cascade and Starwood Hotels do to their employees a. They reduced the employees’ compensations. b. They froze pays. c. They fired many workers. d. They no longer offered pension or health insurance.
