皮皮学，免费搜题
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【单选题】
静态混合是处于静态的色光反射到人眼内,几种色光同时作用于人的什么?A.
大脑
B.
视网膜
C.
眼球
D.
视觉神经
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】On March 1 the price of a commodity is $1,000 and the December futures price is $1,015. On November 1 the price is $980 and the December futures price is $981. A producer of the commodity entered into...
A.
1016
B.
1001
C.
981
D.
1014
【单选题】 取用药品进行实验时,正确的做法是 ( )
A.
若取用的药品实验后有剩余，应倒回原试剂瓶
B.
取用无腐蚀性的固体药品，可用手直接拿取
C.
倾倒液体时，可以快速往试管里倒
D.
每取一种药品后，都应立即盖好试剂瓶塞，标签朝外，放回原处
【简答题】A．written B．graded C．collected D．signed
【简答题】The memorandum of understanding were signed in 47______________
【简答题】It is assumed that a country's net terms of trade would be 100 for the base period of 2010. In 2010, the export commodity price was 50 yuan. In 2015 it was 40 yuan, In 2010, the import commodity price...
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