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举一反三
【多选题】（）属破坏绿化和绿化设施的行为。
A.
擅自折损树（林）木花草
B.
在树旁和绿（林）地内倾倒垃圾或者有害废渣废水、堆放杂物
C.
引起树（林）木损坏的焚烧行为
D.
在绿（林）地内乱设广告
E.
其他损坏绿化或者绿化设施的行为
【单选题】When George W Bush delivered his State of the Union Address this past January, three words appeared that had not previously been heard from the Oval Office: Switchgrass, stalks and woodchips. Bush’’s ...
A.
George W. Bush
B.
Tom Slunecka
C.
James Woolsey
D.
David Bransby
【单选题】医用X射线诊断工作者所受的职业照射，应遵从实践的正当性和防护的最优化原则，任何一年中手、脚的当量剂量不应超过（）mSv。
A.
20
B.
50
C.
150
D.
500
【单选题】Section BDirections: There are 2 passages in this section．Each passage is followed by some questions or unfinished statements．For each of them there are four choices marked A, B, C and D．You should de...
A.
they can afford the cure for malaria
B.
they can save their cash efficiently
C.
they can live safely in the village
D.
their can get rid of poverty soon
相关题目：
【单选题】放射性防护技术分为外照射防护与内照射防护，其中不属于外照射防护的是（ ）
A.
时间防护
B.
空间防护
C.
距离防护
D.
屏蔽防护
【多选题】（）属破坏绿化和绿化设施的行为。
A.
擅自折损树（林）木花草
B.
在树旁和绿（林）地内倾倒垃圾或者有害废渣废水、堆放杂物
C.
引起树（林）木损坏的焚烧行为
D.
在绿（林）地内乱设广告
E.
其他损坏绿化或者绿化设施的行为
【多选题】消防用电主要是指哪些设施的用电（）。
A.
消防控制室
B.
消防水泵
C.
消防电梯
D.
防烟排烟设施
【单选题】每名驻站防护员负责防护的现场防护员不超过（）个，超过时应增设驻站防护员。
A.
1
B.
2
C.
3
D.
4
【单选题】When George W Bush delivered his State of the Union Address this past January, three words appeared that had not previously been heard from the Oval Office: Switchgrass, stalks and woodchips. Bush’’s ...
A.
George W. Bush
B.
Tom Slunecka
C.
James Woolsey
D.
David Bransby
【单选题】医用X射线诊断工作者所受的职业照射，应遵从实践的正当性和防护的最优化原则，任何一年中手、脚的当量剂量不应超过（）mSv。
A.
20
B.
50
C.
150
D.
500
【单选题】Section BDirections: There are 2 passages in this section．Each passage is followed by some questions or unfinished statements．For each of them there are four choices marked A, B, C and D．You should de...
A.
they can afford the cure for malaria
B.
they can save their cash efficiently
C.
they can live safely in the village
D.
their can get rid of poverty soon
【多选题】配电自动化系统建设应满足公司关于中低压配电网安全防护的相关规定，落实（）总体要求。
A.
安全分区
B.
网络专用
C.
横向隔离
D.
纵向认证
【单选题】在DSA的防护中附加滤过的目的是为了减少入射到受检者的射线量其材质最佳的是( )
A.
铝
B.
铁
C.
铜
D.
铅
E.
钨
【多选题】生物突变的防护机制主要有()。
A.
遗传密码的简并
B.
回复突变
C.
基因间和基因内的抑制
D.
多倍体
E.
致死突变