对红外线辐射,应重点防护的人体部位是( )。
A.脾脏和眼睛 B.肺部和眼睛C.眼部和皮肤 D.心脏和皮肤
参考答案:C
解析:红外线辐射对机体的影响主要是皮肤和眼睛。
When the people in the area heard the news that a rare vase which was used by an emperor
during the Ming Dynasty was buried somewhere near their homes, they all went out ___ it. [ ]
A. to search
B. to look at
C. in search for
D. in search of
《机上重大事件报告单》乘务长留存时间().
A、一年
B、二年
C、三年
D、四年