夏季采用排风扇排除仓顶积热降低仓温时,判断仓内外温度是否有(),如果仓温高于仓外温度,就采用排风扇排除仓顶积热降低仓内空间温度。
A.下降
B.升高
C.转移
D.温差
参考答案:D
关于结核病预防正确的是()
A.与新发现排菌患者密切接触的儿童须预防服药
B.结素试验新近转阳的青年需预防服药
C.糖尿病、矽肺患者中结素试验阳转者需预防服药
D.异烟肼剂量成人300mg/d,儿童每天5~10mg/kg,一次顿服,6~12个月
E.异烟肼剂量成人300mg/d,儿童每天5~10mg/kg,一次顿服,1~3个月
For any 3 given numbers, which of the following is always equivalent to adding the 3 numbers together and then dividing the sum by 3 ?() Ⅰ. Ordering the 3 numbers numerically, from highest to lowest, and then selecting the middle number. Ⅱ. Dividing each of the numbers by 3 and then adding the results together. Ⅲ. Multiplying each number by 6, adding the resulting products together, and then dividing the sum by 9.
A. Ⅰ only
B. Ⅱ only
C. Ⅰ and Ⅱ only
D. Ⅱ and Ⅲ only
E. None of the above