輪機英語船舶輔助機械單項選擇題每日一練(2019.01.06)

來源：考試資料網(wǎng)

1 Refrigerant is circulated through a refrigeration system by the （）.

2 It should be ensured that only （） vapor is handled by the refrigeration compressor.

3 （）, iea steam cooler, may be filled in the boiler system to control the superheated steam temperature.

4 If a bilge pump is able to develop vacuum, but is unable to sufficiently pump out the bilges, you would check for all of the following EXCEPT （）.

點擊查看答案&解析

5 The water level showing in a boiler water gauge glass is usually （） during working.

點擊查看答案&解析

99色精品-9色在线-99色在线-99色视频 国产欧美日产一区二区三区_亚洲精品亚洲人成在线观看_四虎在线精品永久观看_免费一级a一片久久精

輪機英語船舶輔助機械單項選擇題每日一練(2019.01.06)

99色精品-9色在线-99色在线-99色视频国产欧美日产一区二区三区_亚洲精品亚洲人成在线观看_四虎在线精品永久观看_免费一级a一片久久精