【单选题】如下对GPRS移动台描述准确的是()
A.
A类GPRS移动台:可同时附着在GPRS网络和GSM网络上,可提供GPRS分组交换业务和GSM电路交换业务,但不能同时进行电路交换和分组交换业务
B.
B类GPRS移动台:可同时连接到GSM和GPRS系统,能在2个系统中同时激活、收听系统消息,能同时进行分组交换业务和电路交换业务
C.
C类GPRS移动台:不能同时附着在GPRS网络和GSM网络上,只能通过手工操作切换业务
D.
D类MS在GPRS业务期间,如果有一个电路交换呼叫接入,MSC/VLR送一个“挂起”通知,SGSN收到通知后,就“挂起”(临时中断)GPRS的连接,电路交换完成后,MSC/VLR发给SGSN“恢复”通知,GPRS就恢复连
【单选题】The olfactory regions of the nose are yellow, richly moist, and ______.
A.
fully fatty substances
B.
full, fatty substances
C.
full of fatty substances
D.
fatty substances are full
【多选题】对于ROM与RAM的说法,正确的有?
A.
ROM( Read-Only Memory , ROM )又叫只读内存,是一种半导体内存,其特性是一旦储存资料就无法再将之改变或删除,且内容不会因为电源关闭而消失。在电子或电脑系统中,通常用以储存不需经常变更的程序或资料
B.
RAM(英语:Random AccessMemory)随机存取存储器又称作“随机存储器”,是与CPU直接交换数据的内部存储器,也叫主存。它可以随时读写,而且速度很快,通常作为操作系统或其他正在运行中的程序的临时数据存储媒介。
C.
RAM 和 ROM 相比,两者的最大区别是 RAM 在断电以后保存在上面的数据会自动消失,而 ROM 则不会。
D.
RAM 和 ROM 相比,两者的最大区别是 RAM 在断电以后保存在上面的数据不会自动消失,而 ROM 则会。
【单选题】The famous film star looked so handsome in his new clothes that we took _____ pictures of him. [ ]
【单选题】John is handsome ______ the scar on his face.
【单选题】Obviously, the Chairman's remarks at the conference were _________ and not planned.
【单选题】The underlined word 'undergone' in Line 1 is closest in meaning to ______.
【单选题】According to the passage, what is ECGC?
A.
A medicine made from green tea.
B.
A powerful substance in green tea.
C.
An additive essential to green tea.
D.
A special treatment to make green tea.
【单选题】The boy has a handsome face _____ the scar on his forehead. [ ]
【单选题】The mayor has spent a handsome amount of time in his last term working to bring down the tax rate.