单项选择题
A.the saturation temperature is higher
B.the higher the saturation temperature
C.the higher is the saturation temperature
D.the saturation temperature is more high
单项选择题 A hydraulic machine is one that uses （） to do work.
单项选择题 If oil density were greater than water’s, the oil separator （）.
单项选择题 Oil Record Book Part I shall be provided to every oil tanker of 150 tons gross tonnage and above and every ship of 400 tons gross tonnage and above, （） oil tankers, to record relevant machinery space operations.