170.
What is the presenter's responsibility during the presentation?
(A)Ensure that the refreshments are ready.
(B) Prepare the presentation equipment.
(C)Answer any questions the group may have.
(D)Show the group around the facility.
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統計: A(3), B(40), C(94), D(1), E(0) #3084839
統計: A(3), B(40), C(94), D(1), E(0) #3084839