單項選擇題

All bilge suction must be fitted with suitable （）, which in the machinery space would be mud boxes positioned at floor-plate level for easy access.

A.strainers
B.valves
C.elements
D.separators

你可能感興趣的試題

單項選擇題

Centrifugal pumps, however, can be designed with a number of impellers （） to attain a large amount of liquid.

A.in series
B.in parallel
C.assembled
D.together

單項選擇題

Sealing in pump shaft is achieved by means of the （）.

A.gasket
B.packing
C.washer
D.spring

<strong id="dzeki"><sup id="dzeki"></sup></strong>