旅客在乘机时应遵守的规则
For those involved, the scandal has been a very________(pain)experience
In my opinion, they should do something to reward their most_ (produce) employees
1mol单原子分子理想气体的温度从0℃升高到100℃，气体的热力学能增加了______J.(R=8.31J·mol-l·K-1)
用手推车运料时，装车应先装后面，卸车应先卸前面还是后面？
When a person immigrates to another country, he should_ (conscious) adapt himself to the new environment
Robots, ___(become) increasingly prevalent in factories and industrial plants throughout the developed world, are programmed and engineered to perform industrial tasks without human intervention.
风力几级以上时应停止露天的起重、打桩、高处作业？
This advertisement is a___(type)example of their marketing strategy.
设A、B、C为三事件，用A、B、C的运算关系表示下列事件，A与B都发生,而C不发生表示为：