What is the correct relative switching priority in a BLSR ring (higher to lower)?（） signal fail, signal degrade, manual switch。 signal degrade, signal fail, manual switch。 protection lockout, manual switch, path AIS。 forced switch, manual switch, signal degrade。 protection lockout, manual switch, forced switch。
小说（）中的女主人公尚洁说：“我像蜘蛛，命运就是我底网。”
描述主要化学药剂的功用。
A UNIX user named Bob wants to replace his chess program with a new one， but he is not sure where theold one is installed. Bob is currently able to run a Java chess program starting from his home directory /home/bob using thecommand： java -classpath /test：/home/bob/downloads/*.jar games. Chess Bob’s CLASSPATH is set （at login time） to： /usr/lib：/home/bob/classes：/opt/java/lib：/opt/java/lib/*.jar What is a possible location for the Chess.class file？（） /test/Chess.class。 /home/bob/Chess.class。 /test/games/Chess.class。 /usr/lib/games/Chess.class。 /home/bob/games/Chess.cla。
贯彻以预防为主，努力消除导致公路损毁的因素，增强设施的耐久性，提高抗御自然灾害的能力是公路养护的基本方针之一。
基站可以使用（）
