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"]
It is considered a best practice to use the Dead Peer Detection (DPD) feature with which VPN topologies?（） ["IPSec","IPSec with GRE","DMVPN","EZVPN","all of the choice"]
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"]
女性，42岁，体重60kg，烧伤后3h送至医院。右上肢水肿明显，剧烈疼痛，有较大水疱；双下肢（不包括臀部）无水疱，皮肤焦黄色，触之不痛，如皮革样。烧伤后第一个24h的补液总量大约是（） ["4500ml","5250ml","6500ml","7250ml","7500ml"]
穆旦诗歌艺术的创新，主要体现在哪几个方面？
