下列资产属于专用设备类的是()。
A.复印机
B.打印机
C.扫描仪
D.冰箱
参考答案:A
汽油馏分(),煤、柴油馏分(),润滑油馏分350~500℃。
The habit-formation theory comes from the ______ and was very popular in the 1950s and 60s.
A.American structuralism
B.functional linguistics
C.behaviourist psychology
D.cognitive psychology