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【单选题】
电磁辐射属于哪一类危险源
A.
物理性危险源
B.
化学性危险源
C.
生物性危险源
D.
行为性危险源
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举一反三
【单选题】《水经注》是一部具有文学价值的地理巨著,它的作者是谁?( )
A.
( 1)郦道元
B.
(2)李时珍
C.
(3)刘义庆
D.
(4)刘安
【单选题】My house has three . It has enough for you to hold a dance party here.
A.
room;rooms
B.
rooms;room
C.
room;room
D.
rooms;spaces
【单选题】用于评价色谱系统检测微量物质能力的是()
A.
色谱柱的理论板数(n)
B.
分离度(R)
C.
灵敏度
D.
拖尾因子(T)
【简答题】----Would you permit me ______ here? ---- Sorry. We don’t permit ______ here in the reading room. A. smoking, smoking       B to smoke, to smoke C. smoking, to smoke       D. to smoke; smoking
【单选题】用于评价色谱系统检测微量物质能力的参数是( )
A.
理论板数
B.
拖尾因子
C.
分离度
D.
灵敏度
【简答题】A. the room colorful. B.Painting the room green. C.Choosing what the man likes. D.Keeping the room as quiet as possible.
【单选题】Here! This is . [     ]
A.
 room 2
B.
2 room
C.
Room 2
【单选题】–Would you permit me ______here? - Sorry, we don’t permit _____ here in the reading room.
A.
smoking; smoking
B.
to smoke; to smoke
C.
smoking; to smoke
D.
to smoke; smoking
【单选题】用于评价色谱系统检测微量物质的能力的是( )
A.
理论板数
B.
分离度
C.
灵敏度
D.
拖尾因子
E.
重复性
【单选题】Here ________ a photo ________ my room.
A.
are; of
B.
is; in
C.
are; in
D.
is; of
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