Phân tích tư tưởng của nhân dân qua đoạn thơ: Những người vợ nhớ chồng… Những cuộc đời đã hóa sông núi ta trong Đất nước của Nguyễn Khoa Điềm
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Each of these conditions will result in lower than normal operating pressures.
When there is a shortage of refrigerant, pressures will be lower than normal.
However, the reduction in pressure may be so slight as not to be readily
detected, other than by a loss of evaporating capacity and the longer running
time of the unit. If the shortage is considerable, both suction and discharge
pressures will be very low; if the system temperature control consists of a
thermostat only, the unit will run continuously with poor refrigerating effect.
When a low pressure switch is in circuit, the compressor will short cycle (cut
in and out quickly) on...
Nội dung trích xuất từ tài liệu:
Guidance for the Selection and Use of Personal Protective Equipment (PPE) in Healthcare Settings
