6. Since the pressure indicator becomes hot, be sure to wear ______ when taking reading.
(A) clothes
(B) safety helmet
(C) glasses
(D) gloves
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統計: A(44), B(145), C(194), D(692), E(0) #3039160
統計: A(44), B(145), C(194), D(692), E(0) #3039160