（）缺点是起重量小，起升高度低，作业幅度小，不能满足大型的起重作业要求。
A、随车起重机
B、全地面起重机
C、桅杆式起重机
D、缆索起重机
参考答案：A
_________ is unknown to us all.
A．Where did he get it
B．Where he got it
C．That where he got
D．Which he got it
You can depend on it that I'm trying to do what is best, but _____ I have got to consider the cost. [ ]
A. equally
B. merely
C. nearly
D. mostly
