硫醇通常集中在()馏份油中。
A、高沸点
B、中沸点
C、低沸点
D、无法确定
参考答案:C
____ the rising birth rate and immigration, the declining death rate also ____ the population growth.
A.In consequence of; caused
B.In addition to; resulted in
C.In terms of; resulted from
D.In spite of; accounted for
以下哪一点不是电视媒体广告的优点?()
A、传播迅速,覆盖面广;形象生动,感染力强。
B、形式多样,适应面广;观众不受条件限制。
C、创作简单,费用较低。