【单选题】1877 年,德国地质地理学家( ),《中国》一书中,把“从公元前114年至公元127年间,中国与中亚、中国与印度间以丝绸贸易为媒介的这条西域交通道路”命名为“丝绸之路”。
【单选题】The largest part of the radiant energy directed toward the earth is ______.
C.
absorbed by the earth' s atmosphere
D.
used for electric power
【单选题】在交流电路中,电弧电流过零值之后,当弧隙的恢复电压( )弧隙击穿电压时,将会使电弧熄灭。 A . B. C . D.
【简答题】The production and application of fertilisers and pesticides account for the largest part of energy use in the modem industrialised agricultural process.
【单选题】下列哪种病原体在昆虫体内仅发育不繁殖,有形态改变,无数量增加( )
【简答题】如何理解税收的概念?税收的基本特征是什么?
【单选题】在1877年,德国地质地理学家( )书中,把“从公元前114年至公元127年间,中国与中亚、中国与印度之间以丝绸贸易为媒介的这条西域交通道路”命名为“丝绸之路”,这一名词很快被学术界和大众所接受,并正式运用。
【单选题】The part that receives the largest amount of annual rainfall is ( ).
B.
the northern part of England
C.
the northwestern part of Scotland
【单选题】The largest part of the light energy directed towards the earth is__________. 查看材料
A.
stored up by the plants
B.
absorbed by the earth' s atmosphere
C.
stored up by the animals in the form. of body fat
D.
used for electric power