土地的经济特性是（）。 ["供给的稀缺性","可垄断性","不可再生性","土地利用多方向性"]
法兰连接时应保持同轴，其螺栓孔中心偏差一般不超过孔径的（），并保证螺栓自由穿入。 ["2%","3%","4%","5%"]
You work as a database administrator for Supportcenter.cn. Because of space constraints， you decided to manually shrink the table. You executed the ALTER TABLE ....SHRINK SPACE statement to shrink the space and you receive an error as follows： ERROR at Line 1： ORA-10635： Invalid segment or tablespace type What could be the reason？ （） ["The table is partitioned","The table name is wrong.","It is an index-Organized table （IOT）","The table is stored in locally managedtablespace.","The table is stored in atablespacewhere segment space is managed manually."]
Which statements are true regarding table compression? （）(Choose all that apply.) [" It saves disk space and reduces memory usage."," It saves disk space but has no effect on memory usage."," It incurs extra CPU overhead during DML as well as direct loading operations."," It incurs extra CPU overhead during DML but not direct loading operations."," It requires uncompress operation during I\/O."]
用人单位已经缴纳生育保险费的，其职工享受生育保险待遇；职工未就业配偶按照国家规定享受生育医疗费用待遇。所需资金从生育保险基金中支付。
一份好的商业计划应符合哪些要求？
