單項(xiàng)選擇題

When the water produced from most evaporator is supplied for drinking purpose, it must be treated to ensure it is biologically pure and （）.

A.slightly acidic
B.slightly alkaline
C.no salty
D.slightly bitter

你可能感興趣的試題

單項(xiàng)選擇題

When the starting air valve closes on one cylinder, another starting air valve has （） opened on another cylinder whose piston has just commenced its downward stroke.

A.just
B.nearly
C.merely
D.already

單項(xiàng)選擇題

When the order （） is received from the bridge, the main air stop valve in the starting air line should be shut.

A.stand-by engine
B.full ahead
C.finished with engine
D.full away

感谢您访问我们的网站，您可能还对以下资源感兴趣：

中文字幕网国产

国产一级特黄a大片亚洲浮力影院久久久久久亚洲第一二三区日韩国产国产精品第不卡国产视频第一页