美国学术能力评估考试（SAT）
单选题The number of cheetahs on an African reserve varies directly as the number of zebras on the reserve varies, according to the equation c=kz, where c is the number of cheetahs, z is the number of zebras, and k is a constant. If there are 4 cheetahs on th
题目
15
14
12.5
12
10
相似问题和答案
第1题：
第2题：
Happiness is a feeling which varies from person to person.()
第3题：
There are two major types of reserves used on projects. The _____ is for (usually major) scope changes that were not considered as part of the original plan, whereas the _____ is to compensate for minor changes in estimating, escalation factors.
A . Management reserve, unplanned allowance fund.
B . Management reserve, contingency.
C . Contingency fund, management reserve.
D . Unplanned allowance fund, budgetary reserve.
E . Unplanned reserve, planned reserve.
第4题：
One of the contributions of Woodrow Wilson was（）
Anatural conservation
Bthe construction of irrigation projects
Cthe setting-up of the Federal Reserve Board and twelve Federal Reserve Banks
Dthe introduction of tariff increase and a low income tax
C
略
第5题：
A.algorithm=failover
B.algorithm=round_robin
C.reserve_policy=no_reserve
D.reserve_policy=single_path
第6题：
Just as Caribbean carnival traditions are a evolving mosaic of African culture composed of African rituals ，craftsmanship，music and dance，Trinidad's carnival is also a beautiful mosaic of cultures of different continents and races.()
第7题：
A(72) is a data communication system that allows a number of independent devices to communications directly with each other in a limited geographic area.
A．LAN
B．WAN
C．Internet
D．Ethernet
解析：局域网是一个数字通信系统，允许一定数量的独立设备在有限的区域内能够彼此直接通信。
第8题：
Which of the following was true of the local African slavery?
[ A] Slaves might have their own families.
[ B] The son of a slave might not be a slave.
[ C] Slavery was confmed to the coastal regions.
[D] There was no killing in African slavery.
47．B 【精析】该题为细节题。文中并未提到选项A表述的内容；根据第一段第五句“They had clearly defined rights，and their slave sta- tus was not necessarily inherited.”我们知道，非洲当地的奴隶拥有明确的权利，而且他们的奴隶身份不一定是世袭的，因此，我们可以判断出，奴隶的下一代不一定还是奴隶，B项正确；第一段第一句“For centuries the most valuable of African resources for Europeans were the salves, but these could be obtained at coastal ports．without any need for going deep inland．”告诉我们，运往欧洲的奴隶来自于海港地区，并没有指出非洲本地的奴隶制度只限于海港地区，故C项的表述是错误的；根据第一段倒数第三句 “Slavery in its extreme forms, including the taking of life, was common to both Africa and the West.”我们知道，屠杀奴隶的事件在非洲和西方国家都有发生，故D项的表述是错误的。
第9题：
B:rises
C:falls
D:changes
第10题：
Which statement is true about a distributed call control environment and the processing of dialed digits from an IP phone？（）
- A、The router that is directly connected to the IP phone will look up the called number in its call routing table.
- B、The router that is directly connected to the IP phone will inform its call agent when a service request is detected.
- C、When the IP phone is picked up，the IP phone initiates the service request.
- D、The directly connected router passes the collected digits to its call agent，and the call agent looks up in its call-routing table the called number.
正确答案:A