用于在装卸某些非标准高度集装箱时调整其高度至标准状态的堆锥是：（）
A.固定锥
B.自动定位锥
C.调整堆锥
D.底座堆锥
参考答案：C
治老年人便秘，肠燥津液不足，首选的药组是（）。
A.薏苡仁、当归
B.火麻仁、芦荟
C.芒硝、柏子仁
D.火麻仁、郁李仁
E.番泻叶、牵牛子
In the following essay, each blank has four choices. Choose the most suitable one from the four choices and write down in the answer sheet.
The key to SNMP (71) is its simplicity. It has a small command set that does a good job of collecting information from (72) any network device. In a SNMP environment, (73) of the work is handled by the network management system. Devices that are being managed are not (74) with processing (75) that might affect their performance.
73（）
A．most
B．many
C．much
D．a lot
