在生产经营单位中,管理和发放劳动防护用品是()部门的主要职责。
A.总务部门
B.供应部门
C.安全生产管理机构
参考答案:C
用适当的介词填空。
l. China has many world records _____ its beautiful buildings and structures.
2. He has been a teacher _____ he was 18.
3. Mount Tai is located _____ Shandong Province.
4. He has walked _____ two hours.
5. The project will be finished_____2020.
如右图中的曲线是表示其他条件一定时,2NO+O22NO2(正反应是放热反应)反应中NO的转化率与温度的关系曲线,图中标有a、b、c、d四点,其中表示未达到平衡状态,且v(正)>v(逆)的点是 ( )
A.a
B.b
C.c
D.d