每一危险物品都应当指定一个编号，但对其性质基本相同、运输条件和灭火、急救方法都相同的危险物品，也可使用（）。
参考答案：同一编号
下面现象说明声能够传递信息的是（ ）
A．捕鱼时渔民利用声呐获得水中鱼群的信息
B．利用超声波可以更准确地获得人体内部疾病的信息
C．声可以用来清洗精细的机械
D．蝙蝠利用“超声波”探测飞行中的障碍
The program memory serves basically as a place (1) instructions, the coded pieces of data (2) direct the activities of the control processing unit (CPU). A group of (3) related in- structions stored in memory is referred to as a program. The CPU "read" each instruction from memory a logically (4) sequence and "use" it to initiate program action. If the program structure is coherent and (5) , processing procedures produce intelligible and useful results.
1（）
A．stored
B．to store
C．to be stored
D．storing
