Which of the listed components is considered to separate the high pressure side of a refrigeration cycle from the low pressure side of the cycle?（）
A. The condenser and the expansion valve
B. The king valve and the solenoid valve
C. The compressor and the expansion valve
D. The condenser and the solenoid valve
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课程文件的三个层次是（）。
A. 教学计划一教学大纲一教科书
B. 课程总目标一领域目标一学科目标
C. 课程目的一课程评价一课程实施
D. 知识一经验一活动
DS6-11型计算机联锁系统更换工控机箱内的电子盘卡、网卡、7122板应注意哪些事项？
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