工作场所的职业病危害因素强度或者浓度应当符合（）。
A、国家职业卫生标准
B、世界卫生组织标准
C、国际劳工组织标准
参考答案：A
未投保破损货物赔偿标准是什么？
—Well, I forgot to bring my dictionary here yesterday.
—Actually you _____ it here. You were not allowed to use it.
A．needn’t bring
B．needn’t have brought
C．didn’t need to bring
D．don’t have to bring
—Well, I forgot to bring my dictionary here yesterday.