【单选题】选择在乘坐五人轿车时,主人开车,最重要的客人应坐在
【判断题】杠杆效应既是保证金交易的优点,也是它的缺点。
【单选题】Whats the purpose of Fredricks talking with Professor Johnson?
A.
To visit Professor Johnson's new office.
B.
To discuss his English achievement.
C.
To express his worries about his classmates.
D.
To show his anxiety on picking up accents.
【单选题】How did the Job Center get to know Johnson?
B.
Johnson e-mailed them.
D.
Johnson is the Job Center's assistant.
【简答题】我国测绘成果基本采用高斯投影(高斯 - 克里格),请问高斯投影的有哪些基本特征?