单选题Strainers, sometimes called （）, are devices designed to prevent the passage of unwanted solids into or further along a system.A dampersB filtersC stopper circuitsD separators

在一个双向链表中，q的前一个节点为p，q的后一个节点为n，删除q所指向节点，则执行()

A.deleteq;

B.q->prev->next=q->prev;q->next->prev=q->next;deleteq;

C.q->prev=p->next;p->next=p->prev;deleteq;

D.q->next=q->prev->next;q->prev=q->next->prev;deleteq;

E.q->prev->next=q->next;q->next->prev=q->prev;deleteq;

F.p->prev->next=p->next;p->next->prev=p->prev;deleteq->next;

In UK，in addition to polite expressions，when refusing a request, people find or give___，if not genuine ones，sometimes called "white lies".

A. intentions

B. concerns

C. excuses

D. comments

●The OSI (68) model，sometimes also called ISO or 7 layers reference model for communication.has been developed by the International Standards Organization in early 1980's.

(68) A．referent

B．reference

C．referance

D．refering

A large metallic device，mounted directly in the piping (usually located at the dock near the point where the vapor hose is attached)，designed to prevent the passage of a rapidly moving flame through the piping is called a ______.

A.flame arrestor

B.flame screen

C.detonation arrestor

D.detonation blocker

The OSI(66)model, sometimes also called ISO or 7 layers reference model for communication, has been developed by the International Standards Organization in early 1980's.

A．referent

B．reference

C．referance

D．refering

which descnption is NOT true?

A．Personal computer has not the features of the larger system．

B．Large systems offer higher processing speeds for user and return more data than PCs．

C．Output devices take output results from the CPU in machine-coded form. and conven them into a form. that used by people.

D．The input/output devices and auxiliary storage units of a computer system are called peripherals.

is a collection of web pages connected together with(67). Each document or page has a unique address that allows you to find it among the millions of other documents on the Web. The address is called a(68)(URL)or sometimes a Uniform. Resource Indicator(URL). When you chose a new link by clicking on it or by typing it into the address field your(69)sends a request for that document and displays it on the screen. That link can be to a different section of the current document, another document on the same website as the original or on another website anywhere in the world. Web pages are designed using(70)or HTML.

A．World Wild Web

B．World Wide Web

C．Web Wild World

D．Word Wide Web

The teacher divides the whole class into pairs. Every student works with his or her partner, and all the pairs work at the same time, it is sometimes call ________. With pairs of students speaking in turn in front of the class is called _______.

A.simultaneous pairwork

B.public or open pairwork“

C.public or open pairwork

D.simultaneous pairwork“

Unlike more traditional embedded systems,a full-fledged CPS is typically designed as a ( ) of interacting elements with physical input and output instead of as standalone devices.

A.system

B.mechanism

C.net

D.network