常减压蒸馏装置是一般包括三部分,其中没有()装置。
A.预蒸馏
B.常压蒸馏
C.减压蒸馏
D.初馏
参考答案:A
By law,when one makes a large purchase, he should have _____ opportunity to change his mind.
A.accurate
B.adequate
C.urgent
D.excessive
FICS(File&Information converting System)工具主要是对()的原始测试数据进行分析的工具。