SAT (short for "satisfiability") is a logic problem that given a boolean formula, it asks whether the boolean formula has an assignment that makes the problem true. An example boolean formula is:
公安机关向有关单位和个人收集、调取证据时，应当告知其必须如实提供证据，以及伪造、隐匿、毁灭证据或者提供虚假证言应当承担的法律责任。
。业内人士推荐同城约会作为进阶阅读
（一）故意干扰无线电业务正常进行的；
type smallint NOT NULL,