测露点注意事项有哪些？
参考答案：
避免急剧降温，气体流速要控制适宜，观察判断要准确。
—Whose guitar is this?
—It _ _ Alice. Only she can play the guitar in our class. [ ]
A. must be
B. must belong to
C. can belong
发电机组第一类非计划停运是指机组急需立即停运者。
