The labor force is defined as people A: who have a job or are looking for a job. B: in the working-age population who have a job. C: in the working-age population who have a full time job. D: who are 16 years of age or older.

The personal allowance depends on your age and ______ status. A: working B: social C: marital D: marriage

Last weekend, I visited an old friend with five children under the age of three. I found that changing diapers at their house is like working on a(n) _____ line.

The percentage of people employed aged 16 years and older divided by the working-age population is known as the A: employment rate. B: employment-to-population ratio. C: labor force participation rate. D: working-age population ratio.

The unemployment rate measures the percentage of the working-age population who can't find a job.

下面哪一个表达式能正确表示逻辑关系："age≥18 或age≤60"？ A: age>=18 || age B: age>=18 or age C: age>=18 | age D: age>=18 && age

表达式“AGE BETWEEN 18 AND 24”等价于 A: AGE>18 AND AGE<24 B: AGE>=18 AND AGE<24 C: AGE>18 AND AGE<=24 D: AGE>=18 AND AGE<=24

设有关系表S(NO，NAME，AGE)，其中AGE为年龄字段，则表达式AGE NOT BETWEEN 18 AND 24等价于（） A: AGE＜=18 OR AGE＞=24 B: AGE＜=18 0R AGE＞24 C: AGE＜18 OR AGE＞=24 D: AGE＜18 0R AGE＞24

与WHERE AGE BETWEEN 18 AND 23完全等价的是（） A: WHERE AGE＞18AND AGE＜23 B: WHERE AGE＞＝18AND AGE＜23 C: WHERE AGE＞18AND AGE＜＝23 D: WHERE AGE＞＝18AND AGE＜＝23

同WHERE Age BETWEEN 15 AND 20完全等价的是（ ）。 A: WHERE Age>;15 AND Age<;20 B: WHERE Age>;=15 AND Age<;20 C: WHERE Age>;15 AND Age<;=20 D: WHERE Age>;=15 AND Age<;=20