工作人员有保护消防设施、报告火警和参加灭火的义务，发现火灾时应立即报警，并组织进行扑救。当公安消防队赶到时，要主动介绍情况，积极配合灭火工作.
参考答案：对
二水石膏胶体微粒逐渐变为晶体并逐渐长大，使浆体凝结，直到石膏开始产生结构强度，称为( )。
A．终凝B．初凝C．凝结D．凝固
Which of the following groups is defined as "newlyweds"
Which of the following best describes the possible attitude of the reporter
A．Sympathetic.B．IndifferentC．Critical.D．Matter-of-fact.
