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【单选题】
人体所有组织和器官加权后的当量剂量之和是A.
剂量当量
B.
吸收剂量
C.
集体当量剂量
D.
集体有效剂量
E.
有效剂量
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A.
环境
B.
工艺
C.
技术
D.
设备
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A.
Y
B.
N
C.
NG
【单选题】Lily does not want to go to the party; she never seems to be ________ about such kind of activities.
A.
random
B.
frustrated
C.
enthusiastic
D.
indifferent
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A.
Y
B.
N
C.
NG
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