获得技术等级和多专业技术等级的代维人员，代维公司需在薪酬方面给予相应的补贴。（）
参考答案：对
Having been attacked by terrorists, _____. [ ]
A. doctors came to their rescue
B. the tall building collapsed
C. an emergency measure was taken
D. warnings were given to tourists
大气卫生标准的制定方法包括（）。
A.大气中有害物质嗅觉阈和刺激阈的测定
B.毒理学试验
C.流行病学方法
D健康危险度评价的方法
