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【单选题】
基因型YYRr的个体与基因型Yyrr的个体杂交,后代不应该有的基因型是A.
YYRr
B.
YyRR
C.
Yyrr
D.
YYrr
E.
YyRr
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A.
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B.
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C.
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D.
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【单选题】In early 2004 eight tiny sensors were dropped from a plane near a military base in California. After hitting the ground, the sensors—also known as smart dust sensors—organized themselves into a networ...
A.
giving troops their protective gear
B.
organizing themselves into a computer network
C.
detecting the movement of military vehicles nearby
D.
operating in remote and dangerous War zones
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A.
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B.
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C.
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D.
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