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【判断题】
GCA反映的是某一个杂交种的好坏；而SCA反映的是某一个亲本（自交系）的好坏。A.
对
B.
错
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反馈参考答案：
举一反三
【简答题】通过拖动窗口的标题栏，可以改变该窗口在屏幕上的位置。（ ）
【单选题】Which of the following statements is correct concerning heat transfer?
A.
Heat is given off from a high temperature region known as a heat sink
B.
Heat transfer rate is affected most by the size of the heat sink involved
C.
Heat transfer rate is affected most by the temperature difference between the heat source and the heat sink
D.
Heat transfer by radiation will occur only by mass motion of a fluid substance
【简答题】在Windows中，要改变窗口的位置，可以用鼠标拖动窗口的（ ）。
【单选题】Heat exhaustion is a condition caused by ______to sunlight or another heat source which often results in dehydration and salt depletion.
A.
a reaction to
B.
overexposure
C.
a limitation of
D.
an absence of
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