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【单选题】
根据《建筑物防雷设计规范》GB50057-2010的有关规定，第二类防雷建筑物专设引下线不应少于两根，并建筑物周围均匀布设，其平均间距不应大于()m。A.
12
B.
18
C.
25
D.
30
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反馈参考答案：
举一反三
【多选题】空间飞行时,飞行器的头部是承受最高温度和最大热流的部位,其表面温度最高可达5000°C,解决此“热障”的方法有()。
A.
辐射防热
B.
烧蚀防热
C.
吸收防热
D.
温控涂层
【单选题】I can’t finish this job by Friday. You expect too much of me.
A.
too much
B.
much too
C.
so much
D.
very much
【单选题】There is ________ work to do and the work is ________ difficult. [ ]
A.
too much, much too
B.
too much, too much
C.
much too, too much
D.
much too, much too
【单选题】Li Lei can't go to visit the Palace Museum because he has _______ things to do. [ ]
A.
too many
B.
much too
C.
too much
D.
many too
【单选题】He eats ________ food, so he is ________ fat.
A.
much too, too much
B.
much too, too many
C.
too much, much too
D.
too much, many too
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