問題詳情
54.Which of the following is true about the pulses of heat in the study?
(A) Each heat pulse lasted for 20 seconds.
(B) The pulses were given to the arms of the volunteers.
(C) Different devices gave out different levels of heat pulses.
(D) There were two levels of heat intensity given to the volunteers.
(A) Each heat pulse lasted for 20 seconds.
(B) The pulses were given to the arms of the volunteers.
(C) Different devices gave out different levels of heat pulses.
(D) There were two levels of heat intensity given to the volunteers.
參考答案
答案：A
難度：適中0.5
統計：A(2),B(0),C(1),D(1),E(0)
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