下图分别表示几位同学在“练习用温度计测液体的温度”实验中的做法。正确的是：[ ]
A.
B.
C.
D.
答案：D
兴达机械厂某电热设备上标有“44Ω 1100w”，则该电器的额定电流是______A，额定电压是______V，正常工作10s放出的热量是______J．
Children who are praised for their work are always________on.
A．encouraged
B．approved
C．inspired
D．spurred
