问题
单项选择题
有危险的地方，应使用（）安全电压。
A.380V
B.220V
C.36V
D.110V
答案
参考答案：C
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有危险的地方，应使用（）安全电压。
A.380V
B.220V
C.36V
D.110V
参考答案：C
| 完形填空。 | ||||
| Paris has a beautiful name, the City of 1 . Do you know 2 it means? Many beautiful buildings are lighted at 3 . The streets are very 4 . When you 5 in Paris, you needn't turn 6 your headlights (车灯) even after dark. Paris is full of life all day and all night. But this is not the 7 reason (原因) for its beautiful name. For hundreds of years, Paris has been the centre of science and art. 8 scientists and artists have come to 9 here. For this reason, people 10 it the City of Lights. | ||||
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