在选择钢丝绳的安全系数时，应按（）的原则来选择。
A.重物的重量
B.安全性和经济性
C.安全性；经济性
D.钢丝型号
参考答案：B
----I_____ see the doctor at 10:00 a.m . I have made an appointment .
-----There is no need. You_____ be all right if you take the medicine.
A．am going to ; will
B．will ; are going to
C．would ; are going to
D．am going to ; would
选用以下何方为宜：
A．龙胆泻肝丸
B．除湿胃苓汤
C．增液汤
D．萆薢渗湿汤
E．小青龙汤
