尿素装置蒸汽冷凝液槽的液位是用压力法测量开口容器液位的，液位的高低取决于取压点位置和容器横截面。
参考答案：错
—Can you understand me?
—Sorry. I can understand what you have said. [ ]
A. easily
B. hardly
C. nearly
D. carefully
“科学技术是第一生产力”，就是说科学技术是直接生产力。( )
