En cas d'incendié, vous devez _____ les pompiers.
A.appeler
B.dire
C.crier
D.venir
参考答案:A
现场仪表测量参数一般分为()参数
A、温度
B、压力
C、流量
D、液位
The shipment was delayed because you had failed ______ the necessary space.
A. to order B. to place C. to take D. to book