抗氧添加剂
参考答案:
加入油品产品中可以抑制其氧化的添加剂。
---- Your brother is good at running. How fast he runs in the sports meeting last week!
---- But he didn’t run _____ Sam.
A.so fast as
B.as faster as
C.as more quickly so
D.so slower as
治疗变异型心绞痛疗效最好的是
A.β受体阻滞剂B.钙通道阻滞剂C.硝酸酯类D.ɑ受体阻滞剂E.血管紧张素转换酶抑制剂