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【单选题】
下列说法错误的是A.
防护缺陷：无防护、防护装置和设施缺陷、防护不当、防护距离不够等。
B.
电危害：带电部位裸露、漏电、雷电、静电、电火花等。
C.
噪声危害：机械性振动、电磁性振动、流体动力性振动等
D.
粉尘与气溶胶：不包括爆炸性、有毒性粉尘与气溶胶。
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皮皮学刷刷变学霸
举一反三
【单选题】Which is the longest river in England?
A.
The Thames
B.
The Severn
C.
The Clyde
D.
The Ness
【单选题】Which is the longest river in the UK?
A.
River Severn
B.
River Thames
C.
Loch Ness
D.
The Great Lakes
【简答题】A．The effects of the flood. B．The prices of fruits and vegetables. C．The cause of the flood. D．Floods of the past twenty years.
【单选题】Which is the longest river in the Great Britain?
A.
Lough Neagh
B.
River Thames
C.
River Clyde
D.
River Severn
【单选题】Which is the longest river in the world ?
A.
The Yangtze Rive
B.
The Amazon
C.
The Nile River
D.
The Rhine River
【单选题】Which is the longest river in the world?
A.
The Yellow River
B.
The Amazon River
C.
The Nile
D.
The Yangtze River
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