To protect against first-hop router failure, four protocols were developed to ensure IP routing redundancy. Which of the following are they?()
第1题:
A great deal has been done to remedy the situation.
A.maintain
B.improve
C.assess
D.protect
第2题:
50________.
A.keep
B.make
C.let
D.protect
第3题:
How do you plan to distribute the securities?
A.Some protect actresses, some work outside the cinema
B.Some protect actors and actresses, some guard dressing rooms and others work outside the theatre
C.Some protect actors and actresses, some guide audience and others work outside the theatre
D.Some guard dressing rooms, some protect super stars and others work outside the stadium.
第4题:
A.to
B.beyound
C.near
D.from
第5题:
We should pay attention________(protect) the environment.
第6题:
Turtles bury their eggs ______.
A. to keep them cool
B. to protect them from danger
C. because of deep instinct
D. to protect them from the weather
第7题:
He __ of a city is the fight to protect it from those who attack it
A、command
B、capture
C、destroy
D、defense
第8题:
Don’t you think ___ important to protect our earth?
A. that
B. how
C. it
D. this
第9题:
Before you leave for the weekend please ( ) the door.
A、secure
B、save
C、guard
D、protect
第10题:
下表正确的是
在父类中的访问属性 访问修饰符 在子类中的访问属性
A. public private 不能直接访
B. protect public public
C. private public 不能直接访问
D. protect private protect