【单选题】Specific tariffs are
A.
import taxes stated in specific legal statutes.
B.
import taxes calculated as a fixed charge for each unit of imported goods.
C.
import taxes calculated as a fraction of the value of the imported goods.
D.
the same as import quotas.
E.
import taxes calculated based solely on the origin country.
【单选题】Specific tariffs are:
A.
levied as a proportion of the value of the imported good.
B.
government payment to domestic producers.
C.
in the form of manufacturing or production requirements of goods.
D.
levied as a fixed charge for each unit of a good imported.
【简答题】用甲醛法测得某铵盐中氮的质量分数为(%)5.15 , 5.32 , 5.22 , 5.25。其平均值( )为____ ;标准差(s)为____ ;其平均值的标准差( )为____; 含氮量在置信度95%时的置信区间是____。 (t 0.05,3 =3.18)
【单选题】Specific tariffs are
A.
import taxes stated in specific legal statutes.
B.
import taxes calculated as a fixed charge for each unit of imported goods.
C.
import taxes calculated as a fraction of the value of the imported goods.
D.
the same as import quotas.
【单选题】Specific tariffs are
A.
Levied as a proportion of the value of the imported good
B.
Levied as a fixed charge for each unit of a good imported
C.
In the form of manufacturing or production requirements of goods.
D.
Government payment to domestic producers
【单选题】人的意识不仅反映客观世界,并且创造客观世界。这一命题表明意识对物质具有( ) (2000年单选)
【多选题】蜘蛛兰和文殊兰常混淆,其区别要点有()
A.
蛛蛛兰花瓣细长且基本聚在一起,形成一个杯状结构,被称为“雄蕊杯”,文殊兰则无
B.
蜘蛛兰叶窄且厚,叶倾向对生;文殊兰叶片宽,叶在基部呈螺旋状生长。
【多选题】文殊兰于蜘蛛兰形态特征非常相似,但也有区别,其主要区别是( )。