185
256- We understand from the passage that in the non-danger zone of a typical
explosives factory --------.
A) nitric and sulphuric acids are produced and various other raw materials are got
prepared
B) nothing that might produce a spark or a flame is permitted
C) the explosives are packaged and stored
D) the workers are provided with heavy factory clothing
E) the main waste products are the nitric and sulphuric acids
257- We can infer from passage that the danger of fire of friction or impact is greatly
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