在蒸发循环制冷系统中若蒸发器上结有冰霜,则其原因可能是:()
A、系统内灌充的氟里昴太多。
B、蒸发器内有水分。
C、通过蒸发器的空气流量不足。
D、空气湿度高。
参考答案:C
Their new bridge is being built now, which is said to be ______the old one.[ ]
A. the length three times of
B. three times the length of
C. three times as longer as
D. three times the length as