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【判断题】
知识服务产品包括超星发现、移动图书馆、知识空间。A.
正确
B.
错误
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举一反三
【单选题】The author believes that humans first appeared in Africa because ______.
A.
Africa is the source of human civilization
B.
there are a lot ancient human fossils found in Africa
C.
African was once the fittest place for humans to live
D.
of reasons not given here
【单选题】测量一约为1.5伏的电压时要求其结果的相对误差不大于1.5%,则应选用下列哪种规格的电压表:
A.
0.5级,量程为5伏
B.
1.0级,量程为2伏
C.
2.5级,量程为1.5伏
D.
0.5级,量程为1.5伏
【单选题】ZPW-2000R型无绝缘轨道电路信号机安装需要满足建筑接近限界要求,安装在调谐区距匹配单元( )的 位置:
A.
大于或等于2.5 m
B.
大于或等于2 m、小于或等于2.5 m
C.
小于或等于2 m
D.
大于或等于2 m
【简答题】It seems to me that the board of directors is ________over the opening of a branch office in South Africa.
【单选题】English is also spoken in Singapore and Malaysia and countries in Africa _________ South Africa.
A.
for example
B.
for instance
C.
such as
D.
such like
【单选题】ZPW-2000R型无绝缘轨道电路信号机安装需要满足建筑接近限界要求，安装在调谐区距匹配单元（）的位置。
A.
大于或等于2m
B.
小于或等于2m
C.
大于或等于2.5m
D.
大于或等于2m、小于或等于2.5m
【简答题】Africa has the highest birth rates in the world, and today the total population in Africa is ______.
【单选题】测量一约为1.5伏的电压时要求其结果的相对误差不大于1.5%,则应选用下列哪种规格的电压表?
A.
0.5级,量程为5伏
B.
1.0级,量程为2伏
C.
2.5级,量程为1.5伏
D.
1.5级,量程为3伏
【单选题】Africa's elephants are divided between the savannahs of eastern and southern Africa and the forests of central Africa. Some biologists reckon the forest ones-smaller, with shorter, straighter tusks-ma...
A.
Biological evidences are insufficient to support this point of view.
B.
The high price of ivory entices more killings of elephants.
C.
Their number is too small to be of a species.
D.
A serious disease broke out among the elephants and sharply decreased their number.
【单选题】Horn of Africa refers to:
A.
Eastern part of Somalia
B.
Eastern part of Africa
C.
A kind of horn made in Africa
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