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29. As a safety measure, the detonator for a nuclear device may be made of two pieces of equipment, _____ is controlled by a different employee.
(A) each of them
(B) each
(C)both of them
(D)each of which

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難度： 適中
1F
Angela Yang 小三下 (2015/03/29)
which 是關代 根據前句 the detonator for a nuclear device may be made of two pieces of equipment, 有主詞動詞S=the detonator for a nuclear device V=may be made後句也是一個完整句子有主詞動詞 , 因為有動詞is 兩個句子要有關代或連接詞ex. and來連接，所以只能選有which 的D each of which
detonatorn.引爆装置，雷管，起爆管As a safety measure, the detonator for a nuclear device may be made of two pieces of equipment, each of which is controlled by a different employee.作為一種安全措施，雷管的核裝置可以由兩件設備，其中的每一個由不同的僱員進行控制。
2F
whale66622（11 高三上 (2018/03/13)

主要子句+，+數量詞+of+關係代名詞 (whom/which)+形容詞子句

                                            *whom人 / which物

As a safety measure, the detonator for a nuclear device may be made of two pieces of equipment,         each of which is controlled by a different employee. 


ex: John has taught many students, two of whom have become great scientists.


29. As a safety measure, the detonator f..-阿摩線上測驗