下面哪个技术可以达到高达2.488Gbps的传输速率A.ADSL B.T1 C.IS

题型:单项选择题

问题:

下面哪个技术可以达到高达2.488Gbps的传输速率

A.ADSL

B.T1

C.ISDN BRI

D.OC-SONET/SDH

考点:计算机等级考试网络技术计算机三级(网络技术)26
题型:单项选择题
六年级男生比女生多
1
6
,男女生人数比是(  )
A.1:6B.7:6C.6:7D.6:1
题型:单项选择题

患者女,60岁。有肺气肿、肺源性心脏病病史13年。近3d出现呼吸困难、咳嗽、下肢水肿加重,口服利尿剂治疗,水肿减轻,心率107次/min,律齐,血尿素氮10.4mmol/L,肌酐264μmol/L,血钾3.04mmol/L,血钙2.1mmol/L,如需洋地黄治疗,容易引起其洋地黄中毒的因素包括()

A.老年

B.肾功能减退

C.肺源性心脏病

D.低血钾

E.低血钙

题型:单项选择题

根据《疫苗流通和预防接种管理条例》,第一类疫苗是指

A.县级以上药品监督管理部门组织的应急接种所使用的疫苗

B.县级以上药品监督管理部门组织的群体性预防接种所使用的疫苗

C.基层人民政府组织的群体性预防接种所使用的疫苗

D.政府免费向公民提供,公民应当依照政府的规定受种的疫苗

E.由公民自费并且自愿受种的疫苗

题型:单项选择题

In the past year, a lot has changed in the field of human spaceflight. (46)In January, President George Bush brushed aside the fact that America’s entire space-shuttle fleet was grounded when he announced grandiose plans to put people back on the moon, and then to launch a manned mission to Mars. (47) In June, Burt Rutan, an American aeronautical engineer, showed that human spaceflight was no longer the preserve of governments by sending a man to the edge of space in Space Ship One, a privately financed vehicle that cost about the same to build as a luxury yacht. That was followed in September by Sir Richard Branson, the British entrepreneur behind the Virgin brand, announcing that he had signed a deal with Mr. Rutan to work on plans for a fleet of five suborbital vehicles developed from Space Ship One.

(48) Now, in the dying days of the year, America’s Congress has passed a bill that unravels a tangle about who would be responsible for regulating the fledgling industry, and under what terms. (49) The bill also allows passengers to fly, on the understanding that this new generation of vehicles may not be as safe as taking a commercial flight between, say, New York and London.

The official line from Virgin Galactica, as Sir Richard’s latest venture is modestly named, is that this coming change in the law makes no practical difference to the firm’s plans, since they do not intend to fly unless they can make their spacecraft as safe as a private jet. But it must surely come as some sort of relief. In any case, Will Whitehorn, director of corporate affairs at Virgin’s headquarters in London, and soon to become the president of Virgin Galactica, says that work is under way on a mock-up of the interior of a new spacecraft that will hold five passengers. (50) Virgin has already committed $20m towards licensing the SpaceShipOne technology from Mr. Rutan and his financial backer Paul Allen, a software billionaire.

(50) Virgin has already committed $20m towards licensing the SpaceShipOne technology from Mr. Rutan and his financial backer Paul Allen, a software billionaire.

题型:单项选择题

领导者只决定目标、政策、任务的方向,对部属在完成任务各个阶段的日常活动不加干预的领导方式是()

A.集权型

B.分权型

C.均权型

D.人事并重型

更多题库