名词解释题英译中：Drop and pull transport

The police asked the driver to()the car to have an alcohol test.

A. pull over

B. pull out

C. pull on

● A transport layer protocol usually has several responsibilities. One is to create a process-to-process communication; UDP uses （71） numbers to accomplish this. Another responsibility is to provide control mechanisms at the transport level. UDP does this task at a very minimal level. There is no flow control mechanism and there is no （72） for received packet. UDP,however, does provide error control to some extent. If UDP detects an error in the received packet, it will silently drop it．

The transport layer also provides a connection mechanism for the processes. The （73） must be able to send streams of data to the transport layer. It is the responsibility of the transport layer at （74） station to make the connection with the receiver, chop the stream into transportable units,number them, and send them one by one. It is the responsibility of the transport layer at the receiving end to wait until all the different units belonging to the same process have arrived, check and pass those that are （75） free, and deliver them to the receiving process as a stream.

（71）A．hop B．port C．route D．packet

（72）A．connection B．window C．acknowledgement D．destination

（73）A．jobs B．processes C．programs D．users

（74）A．sending B．routing C．switching D．receiving

（75）A．call B．state C．cost D．error

(A)pull in

(B) pull out

(C) pull over

(D) pull up

Which of the following statements in supported by the passage?

A．The sun shines constantly and gives out the same amount of energy every year．

B．The cause of the sun’S fluctuations is its loss of energy with each passing year

C．It is sure that the energy sent out by the sun will drop when more sun spots appear．

D．Fluctuations in weather pattems are the results of the pull of gravity．

The CO2 flooding system is actuated by a sequence of steps which are ______.

A.break glass, pull valve, break glass, pull cylinder control

B.sound evacuation alarm, pull handle

C.open bypass valve, break glass, pull handle

D.open stop valve, open control valve, trip alarm

要删除视图myview，可以使用()语句。

A.DROP myview

B.DROP TABLE myview

C.DROP INDEX myview

D.DROP VIEW myview

在SQL中，基本表的撤销(从数据库中删除表)可以用（ ）命令。

A)DROP SCHEMA

B)DROP TABLE

C)DROP VIEW

D)DROP INDEX

What must be carried out in order to launch and inflate an inflatable liferaft?

A.Pull on the hydrostatic release，pull on the sea painter

B.Push on the hydrostatic release，pull on the sea painter

C.Push on the hydrostatic release，push on the sea painter

D.Pull on the hydrostatic release，push on the sea painter