地网施工应采用不小于40mmX4mm的热镀锌扁钢作为水平接地体，用50mmX5mm长（）m的热镀锌角钢作为垂直接地体，地网及接地体顶部距地面的垂直埋设距离不小于0.7m，在寒冷地带接地体应埋设冻土层以下。 ["1","1.5","2.5","3"]
Which two statements are true？（） ["Foo.beta（） is a valid invocation of beta（）.","Foo.alpha（） is a valid invocation of alpha（）.","Method beta（） can directly call method alpha（）.","Method alpha（） can directly call method beta（）."]
关于正当防卫与紧急避险，下列说法正确的是（） ["正当防卫明显超过必要限度造成重大损害的，应当以防卫过当罪定罪，但是应当酌情减轻或者免除处罚","紧急避险用于解决紧迫情况下合法利益之间的冲突","防卫过当的场合，其罪过形式通常是直接故意","对于”事后防卫”的，通常按照防卫过当处理"]
在生产过程中调节器比例调节作用有以下规律比例度降低调节作用（） ["增强","减弱","不变"]
View the Exhibit and examine the attributes of an undo tablespace. In an OLTP system, the user SCOTT has started a query on a large table in the peak transactional hourthat performs bulk inserts. The query runs for more than 15 minutes and then SCOTT receives thefollowing error: ORA-01555: snapshot too old What could be the reason for this error（） ["The query is unable to get a read-consistent image.","There is not enough space in Flash Recovery Area.","There is not enough free space in the flashback archive.","The query is unable to place data blocks in undo tablespace"]
表演游戏
