某蒸发器表面结有冰块,以下哪项正确?()
A.这是正常的
B.通过膨胀阀的制冷剂过少
C.通过膨胀阀的制冷剂过多
D.制冷系统高压侧的压力过高
参考答案:C
Despite the fact that all three teams ________ different approaches to the problem, they were all immediate successes.
A.adopted
B.attained
C.adapted
D.attached
( )是指把消防泵输出的压力水或其他灭火剂送到火场的管线和器具。
A、消防水带
B、吸水器具
C、输小器具
D、射水器具