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【单选题】
《煤矿安全规程》规定，主要泵房至少有2个出口，一个出口用斜巷通到，并出泵房底板()m以上。A.
6
B.
7
C.
8
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】________ is used in making raft foundations and pile foundations.
A.
Plain Cement Concrete
B.
Reinforced Cement Concrete
C.
Prestressed Cement Concrete
D.
Ferro-Cement
【单选题】How many foundations you need to edit to ensure they are aligned with the inside of external walls
A.
2
B.
4
C.
9
D.
all the foundations
【简答题】教材P50,2-10
【单选题】The Public Broadcasting System is supported by donations from foundations and other sources.
A.
grants
B.
references
C.
accounts
D.
advertisements
【简答题】p50 1
【单选题】The Public Broadcasting System is supported by ______from foundations and other sources.
A.
donations
B.
references
C.
accounts
D.
advertisements
【单选题】It is implied in the last paragraph that some foundations are used by the rich to ______.
A.
provide shelter for the poor
B.
build good fame
C.
avoid paying tax
D.
support their business
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