Mass media promotion aims to influence public perception, not only target ().
A.competitors
B. consumers
C. products
A.competitors
B. consumers
C. products
A.policy
B.promotion
C.propaganda
D.debate
A.Pay for Personality
B.Pay for Product
C.Pay for Performance
D.Pay for Promotion
A.popular
B.mass
C.common
D.conventional
A.mass
B.mess
C.dirty
D.loss
A sample of D-ribose(C5H10O5) with mass 0. 727 g was weighed into a calorimeter and then ignited in presence of excess oxygen. The temperature rose by 0.910 K when the sample was combusted. In another separated experiment in the same calorimeter the combustion of 0. 825 g of benzoic acid,for which the ΔcUΘm= 3251 kJ·mol-1,gave a temperature rise of 1.940 K. Calculate the ΔrUΘmand ΔrHΘmof D-ribose combusted.