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【单选题】
C6接口信号是频率为( )的正弦信号。A.
7.820 kHz ±0.2 kHz
B.
8.820 kHz ±0.1 kHz
C.
5.820 kHz ±0.1 kHz
D.
4.820 kHz ±0.2kHz
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反馈参考答案：
举一反三
【判断题】A tariff quota is a combination of a specific tariff and an ad valorem tariff.
A.
正确
B.
错误
【判断题】A ad valorem tariff provides domestic producers a declining degree of protection against import-competing goods during periods of changing prices.
A.
正确
B.
错误
【单选题】According to Lyderic Bocquet, which of the following is NOT mentioned as a factor influencing the bounces of a stone on water?
A.
The clearness of the water.
B.
The gravity of the Earth.
C.
The shape of the stone.
D.
The speed and spin.
【简答题】简述垂直电梯曳引原理。
【单选题】According to the passage, the actions of the customers of Mrs. Vaught's bank were influenced chiefly by the______.
A.
ease with which they could obtain their money
B.
confidence demonstrated by other customers of the bank
C.
confidence that Mrs. Vaught demonstrated
D.
failure of several other banks to open
【简答题】For this part, you are allowed 30 minutes to write a composition on the topic The Influence of Internet. You should write at least 120 words and you should base your composition on the outline. 1. The...
【判断题】A ad valorem tariff provides domesticproducers a declining degree of protection against import-competing goodsduring periods of changing prices.
A.
正确
B.
错误
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