减压阀的作用有哪些?
参考答案:
减压阀又叫压力调节阀或压力调整器。在热力和气体动力系统上它主要用来降低蒸汽和压缩气体的压力,并能自动的将降低后的压力维持在一定的范围内。
Taking this medicine, if ________, will certainly do damage to your health, as the doctor advises.
A.continuing
B.continued
C.keeping
D.to keep