联合国粮农组织的英文缩写是:();世界卫生组织英文缩写是:();国际食品典委员会英文缩写是();国际标准化组织英文缩写是:()
参考答案:FAO;WHO;CAC;ISO
依据《燃煤二氧化硫排放污染防治技术政策》,在热网区外和未进行集中供热的城市地S,不应新建产热量每小时在()MVV以下的燃煤锅炉。
A.0.7
B.1.4
C.2.8
D.3.5
A block and tackle is “rove to advantage”. This means that the().
A.blocks have been overhauled
B.hauling parts of two tackles are attached
C.hauling part leads through the movable block
D.hauling part leads through the standing block