在每件货物包装的表面都必须有识别标志和相应的储运图示标志和货物性能标志。
参考答案：对
— _____
— He is a bank clerk. [ ]
A. Why does he like koalas?
B. What does your father look like?
C. Where is your father from?
D. What does your father do?
根据国家有关标准，安全标志应由哪些内容构成？
