卫生部对《中华人民共和国食品卫生法》具体应用问题所作的解释,属于哪种法律解释()。
A.非正式解释
B.司法解释
C.立法解释
D.行政解释
E.学理解释
参考答案:D
The traffic rule says young children under age four and () less that 40 pounds must be in a child safety seat.
A. being weighed
B. to weigh
C. weighed
D. weighing
下列哪种加宽机制属于非均匀加宽()?
A、晶格缺陷加宽
B、自然加宽
C、碰撞加宽