單項選擇題The () is a crystal which, under pressure, produces an electric current which varies with the pressure.

A.alternator
B.glass thermometer
C.burdon tube
D.piezoelectric pressure transducer


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1.單項選擇題Remote control means that ().

A.the system is manned manually
B.the system is situated remotely from the operator
C.the system is controlled automatically
D.all the above

3.單項選擇題The emergency generator or emergency battery is connected to() on most large ships.

A.distribution boards
B.section boards
C.emergency switch boards
D.main switch boards

4.單項選擇題The main generators are connected to().

A.distribution boards
B.section boards
C.emergency switch boards
D.main switch boards

5.單項選擇題UMS stands for().

A.ultra much space
B.universal medium system
C.unit machined space
D.unattended machinery space