坚持“管理、装备、培训”三并重,是我国煤矿安全生产的基本原则。
参考答案:对
In October, the World Health Organization warned that the global financial crisis might worsening mental health, with fear of job loss becoming the biggest source of psychological pressure for China’s white-collar workers.
A.turn to
B.lead to
C.refer to
D.amount to
差压式流量测量系统中,负压阀漏将会造成()。
A、流量指示变小
B、流量指示变大
C、无变化
D、不一定