用中文答
1]suppose hk residents who emigrated to foreign countries return to hk and fill up local job vacancies.which of the following is correct.
ans:hk's labour force would increase while her unempolyed rate would decrease.
[given that the unemployed population remains unchanged]之前空的職位宜家被填補.咁失業率唔系下跌咩,點解話冇變?
2]a holder of fixed income securities.咩系固定收入抵押,有咩用途?