水蒸气蒸馏装置中T形管的作用是:()和()。

A. What the purposes of support services are.
B. What issues new college students will face.
C. What the purposes of the freshman introduction are.
D. What new college students should know before they arrive.

A. She finds the information a little confusing.
B. She finds the information a little frightening.
C. She considers it as a chance to make new friends.
D. She considers it as an exciting meeting for students.