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【多选题】
对于眼部异物,以下说法正确的是哪些?A.
附着在结膜表面,需要用干净的手帕或棉签取出异物
B.
嵌入结膜囊内,需要翻开眼皮取出异物,并滴加眼药水
C.
角膜异物需要翻开眼皮取出异物,并滴加眼药水,
D.
取出异物时使用的手帕或棉签,应该用干燥的,防止二次感染
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【简答题】The two common types of white-light LED used in the visible light communication system are ________ and____________.
【单选题】Usually the organizational structure of the company is shown as the organizational chart. Two common types of organizational charts exist, tall and :
A.
Detailed chart
B.
Flat chart
C.
Short chart
D.
Level chart
【单选题】Usually the organizational structure of the company is shown as the organizational chart. Two common types of organizational charts exist, tall and
A.
short chart.
B.
detailed chart.
C.
flat chart.
D.
level chart.
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