乙二醇精制塔回流比对产品的影响,说法正确的是()。
A、不影响产品质量
B、影响产品质量
C、影响产品中的重组分含量
D、影响产品中的水含量
参考答案:B, C, D
Although Tom agreed with her on most points, here was one he was unwilling to give in.
A.on which
B.in which
C.to which
D.with which
请解释一下什么是Setup-Time和Hold-Time,什么是Setup-Time裕量和Hold-Time裕量。