The Vikings began to attack various pa

1、The various pumps and lines are （） to

The various pumps and lines are （） to some extent so that each pump can act as an alternative for another.AinterlockedBinterconnectedCinterferedDinteracted

2、The following terms describe various d

The following terms describe various design options for Enterprise connectivity to the Internet.Which of the follow ing imply that the Enterprise connects to two or more ISPs？（）A Single HomedB Dual HomedC Single MultihomedD Dual Multihomed

3、30． Which is right according to the pa

30． Which is right according to the passage?A People have too much time to talk with each other．B Life now is very simple．C Some families have become single-parent families．D Lots of mothers stay at home and look after their children．

4、To avoid impingement attack, care must

To avoid impingement attack, care must be taken with the water （） through the tubes of the heat exchangers.AtemperatureBvelocityCdensityDviscosity

5、Before she began to study at Beijing U

Before she began to study at Beijing University, she（）in a factory for five years.Ahad workedBworkedChas workedDwould work

6、The Voice of America began during the

The Voice of America began during the World War II when Germany was broadcasting a radio program to get international (21) . American official...