【单选题】The rule of 70 states that:
A.
the average score on standardized tests is normally distributed with a mean of 70 and a standard deviation of 10.
B.
everyone should retire by age 70.
C.
the number of years for a variable to double equals 70 divided by its annual growth rate.
D.
Social Security benefits should increase when people reach 70.
【简答题】(________) rule tells us when a sound is to be deleted although it is orthographically represented.
【单选题】The rule of 70 tells us that:
A.
it takes most countries 70 years to increase real GDP growth.
B.
the number of years it takes for a variable to double is equal to 70 divided by the annual growth rate of the variable.
C.
the number of years for real GDP per capita to double is the current growth rate plus 70.
D.
only 70 countries can have real GDP growth at any given time.
【单选题】The Rule of 70 is used to
A.
estimate how much of an economy's growth rate is due to increases in capital per hour of labor
B.
calculate the standard of living
C.
calculate the economy's growth rate
D.
estimate how long it will take the level of any variable to double
【多选题】根据会计档案管理办法等规定,下列( )情况下,不得销毁会计档案。
B.
正在项目建设期间的建设单位,其保管期已满的会计档案
【单选题】The Rule of 70 applies:
B.
only to GDP per capita.
D.
only to developed countries.
【单选题】The rule of 70 is most useful in:
A.
identifying the causes of economic growth.
B.
identifying the sources of economic growth.
C.
estimating the productivity of labor.
D.
estimating the doubling time of real GDP for a given growth rate.
【判断题】月NaOH标准滴定溶液滴定一元弱酸时,一般可选用酚酞作指示剂。( )