经计算曲线超高顺坡坡度小于2‰时,不得采用(),大于2‰时则按2‰设置。
A. 2‰
B. 2.5‰
C. 3‰
D. 1.5‰
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关于加氢催化剂采用密相装填运转带来的好处,下列说法中不正确的是()。
A. 可以提高处理量
B. 在同样的处理量下,空速下降
C. 降低催化剂初期运转温度
D. 在同样的处理量下,空速提高
Which of the following are shared distribution tree characteristics()
A. Memory requirements are higher for shared distribution tree than for source distributiontree.
B. Creates a tree from a central RP to all last-hoprouters.
C. Uses a rendezvous point.
D. An optimal path is created between each source router and each last-hoprouter.
E. Place(S,G)entry in each router’smulticast routing table.
F. Place(*,G)entry in a router’smulticast routing to table.
将自己的生产经营和发展与某个大型企业联系起来的经营战略,是()战略。
在ORACLE9.2.0.1.0数据库中,执行以下哪个命令时,能看到数据库软件版本号()
A. sqlplus/nolog;
B. connectsys/password@tomc_192.168.1.1assysdba;
C. shut down;
D. drop user WOMC21cascade;