皮皮学，免费搜题
登录
搜题
【单选题】
在自动控制系统中执行机构按能源种类可分为( )A.
气动执行器；电动执行器；液动执行器
B.
电磁阀；电动阀
C.
电动执行器；风门
D.
电磁阀；电动阀；风门
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】GMP中规定，洁净室(区)与室外大气和相邻房间之间的静压差应大于
A.
15帕和10帕(Pa)
B.
10帕和5帕
C.
12帕和4帕
D.
8帕和2帕
E.
5帕和1帕
【单选题】1 2 . In 2012, the Public Relations Society of America reached a common definition for public relations. Which of the following represents the winning definition? D) "Public relations is a strategic c...
A.
"Like beauty, the definition of 'public relations' is in the eye of the beholder."
B.
"Public relations is a planned process to influence public opinion, through sound character and proper performance, based on mutually satisfactory two-way communication."
C.
"Public relations revolutionizes the way organizations and individuals communicate to their key constituent publics around the world."
D.
"Public relations is a strategic communication process that builds mutually beneficial relationships between organizations and their publics."
【单选题】The normal flow of organizing for a public relations campaign takes the following path _______________.
A.
Business objectives/environment/public relations strategies/public relations programs
B.
Environment/public relations strategies/public relations programs/ business objectives
C.
Environment/business objectives/public relations strategies/public relations programs
D.
Public relations strategies/business objectives/environment/public relations programs
【简答题】All businesses are involved in public relations.
相关题目：