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【单选题】
防火防爆安全装置可以分为阻火防爆装置与防爆泄压装置两大类，下列关于阻火防爆装置的性能及使用的说法中，正确的是( )。A.
一些具有复合结构的料封阻火器可阻止爆轰火焰的传播
B.
工业阻火器常用于阻止爆炸初期火焰的蔓延
C.
工业阻火器只有在爆炸发生起作用
D.
被动式隔爆装置对于纯气体介质才是有效的
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【简答题】A thousand years ago, Hong Kong was covered by a thick forest. As more and more people came to live in Hong Kong, these trees were cut down and burnt. Now there is no forest left, though there are st...
【简答题】完型填空。 A thousand years age Hong Kong was covered by a thick forest. As more and more people came to 1 in Hong Kong, these trees were cut down and burnt. Now there is 2 forest left, though there are st...
【简答题】A thousand years ago Hong Kong was covered by a thick forest. As more and more people came to 1 in Hong Kong, these trees were cut down and burnt. Now there is 2 forest left, though there are still so...
【简答题】A thousand years ago Hong Kong was covered by a thick forest. As more and more people came to 31 in Hong Kong, these trees were cut down and burnt. Now there is 32 forest left, though there are still ...
【简答题】计算机内传输的信号是( ),而公共电话系统的传输系统只能传输( )。
【单选题】Why did more and more people came to eat at the Happy Restaurant?
A.
Because the price was lowered( 降低 ).
B.
Because there were more kinds of dishes.
C.
Because men and women were given menus with different prices on them.
【多选题】意见适用于()
A.
传达要求下级机关办理和有关单位需要周知或共同执行的事项
B.
用于下级机关对上级机关提出工作建议
C.
用于对所属机关、组织和人员提出规范性的要求和措施
D.
用于上级机关对工作进行指导
【简答题】完型填空。 A thousand years age Hong Kong was covered by a thick forest. As more and more people came to __ 1 __ in Hong Kong, these trees were cut down and burnt. Now there is __ 2 __ forest left, though ...
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