The author refers to Three Mils Island ________.
A) because he is doubtful about what the officials said
B) because he fears that a piece of the Skylab may strike a nuclear power plant
C) because he is afraid of the use of nuclear power
D) because the nuclear reactor there and the Skylab were both built by the same company
第9题
不能用于抗凝或减缓凝血的物质是()
A.柠檬酸钠
B.EDTA
C.肝素
D.双香豆素
E.维生素K
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