大多数生物技术下游加工过程按顺序分为预处理、提取、()和成品四个阶段。
参考答案:精制
每辆缆车有4个座位,25辆缆车,共跑了6个来回,每天这种缆车最多载客多少人?
—How do you like working here?
—_______.To be honest,I miss my former colleagues.
A.I like it here
B.Not so good
C.More than satisfactory
D.very much