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【单选题】
避雷针要有足够的高度，能保护铁塔或杆上的所有天线，所有室外设施在避雷针的（）度保护角之内。A.
30
B.
35
C.
45
D.
50
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【单选题】A man who witnessed the accident said that the car _____ at nearly 100 kilometers per hour at th
A.
29. A man who witnessed the accident said that the car _____ at nearly 100 kilometers per hour at the time. A．was going
B.
is going
C.
had gone
D.
has been going
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