【单选题】听力原文:M: I don’t know if I will be able to turn in my economics paper on time. W: Haven’t you heard that the professor gave us a week’s extension on it? Q: What does the woman mean? (18)
A.
She hasn't heard from the professor in a week.
B.
The class has extra time to complete the assignment.
C.
She only just found out about the economics paper.
【简答题】用所给词的适当形式填空。 1. I have some __________ (favor) to ask you. 2. Tom and I __________ (go) on vacation next week. 3. Do you have __________ (some) money with you? 4. _________ (not forget) to clean the b...
【简答题】为了求得 E 点的高程,分别从已知水准点 A,B,C 出发进行水准测量,计算得到 E 点的高程值及各段的路线长列于下表中,试求 (1) E 点高程的加权平均值 ( 取位至 mm ) ; 78.321m (2) 单位权中误差; (3) E 点高程加权平均值的中误差。 路线 E 点 高程值 (m) 路线长 ( km ) 权 改正数 (mm) A → E 78.316 2.5 B → E 78.329 ...