【判断题】摄影测量所采用的五种常用坐标系中,只有地面测量坐标系为右手系。
【单选题】When is the deadline of the application for the next semester?
A.
It is two months from the end of this semester.
B.
It can't be later than two months before the semester begins.
C.
It is at the beginning of the second month of the next semester.
D.
It is at the end of the second month of this semester.
【简答题】A. She didn't require any papers last semester. B. She was more flexible last semester. C. She grades papers very quickly. D. She isn't teaching this semester.
【判断题】双重联锁正反转线路可以实现正反转直接切换。( )
【单选题】This semester is() to a close.