当空气作绝热上升运动时，气温要逐渐升高，气流越过山后，在山的背风坡下沉，气温将下降。（）
参考答案：错
Passage TwoQuestions 29 to 31 are based on the passage you have just heard.
A．More and more people are used to the Internet.
B．Cell pones are Becoming an important part of our life.
C．Postcards are in the danger of extinction.
D．Communications between people are becoming easier.
无菌操作或低温灭菌的安瓿须用()
A．120～140℃温度灭菌1.0h
B．180℃干热灭菌1.5h
C．180℃干热灭菌30min
D．200℃干热灭菌30min
E．170℃干热灭菌1.5h
