简述常见的热辐射伤害准则。
参考答案:
常见的热辐射伤害准则有:
(1)热通量准则;
(2)热剂量准则;
(3)热剂量一时间准则;
(4)热通量一时间准则;
(5)热通量一热剂量准则。
某市拥有500万人口,其中从业人数450万,登记失业人数l5万,该市统计部门公布的失业率应为()。
A.3%
B.3.2%
C.3.5%
D.3.8%
The goods which pass through the territory by land is defined as ().
A. transit goods
B. transshipment goods
C. through goods
D. import and export goods