A. warning B. ringing C. calling D. yelling

● A group of related fields is called a （75) . （75）A. data B. file C. record D. database

A321飞机内话机上EMER CALL键的功能是________。A.呼叫全体乘务员B.紧急呼叫驾驶舱C.紧急广播D.超

In response _________ her call, I mailed her. A. for B. with C. to D. on

I invited them _____ our house the next week. A. to call for B. to call at C. c

●A 10BaseT Ethernet LAN has （73).（73)A. a star topology B. a ring topologyC. a bus topolog

He lost control of his feeling and began to _____.A.laughB.danceC.weepD.yell