D/D stands for Demand Draft。

A、electronic chart display and indication system B、electronic chart display and information system C、electric chart display and informing system D、electronic chart display and indicating system

A . Emergency Position Indicating Radar Buoy B . Electronic Pulse Indicating Radiobeacon C . Emergency Position Indicating Radiobeacon D . None of the above

A . the International Convention for the Safety of the Life at Sea B . the International Convention for the Prevention from ships C . the International Convention on Standards of Training, Certification and Watch keeping for Seafarers D . the International Convention for the Control and Management of Ship’s Ballast Water and Sediment

A . rain B . high C . layer D . cirru

A . UniDirectional Loop Detection B . Unspecified Distribution Label Detection C . Unified Distribution Label Direction D . UniDirectional Link Detectio

A . 正确 B . 错误

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

A . Mobile Satellite Information B . Motor ship Identification C . Most Serious Information D . Maritime Safety Informatio

是 否

A．1*1=1 1*2=2 1*3=3 2*1=2 2*2=4 3*1=3 B．1*1=1 1*2=2 1*3=3 2*2=4 2*3=6 3*3=9 C．1*1=1 1*2=2 2*2=4 1*3=3 2*3=6 3*3=9 D．1*1=1 2*1=2 2*2=4 3*1=3 3*2=6 3*3=9

A．the value of the marginal product of auto workers B．derived demand C．indirect demand D．output demand

Let A stand for the bundle (7,9);B stand for the bundle (10,5); and C stand for the bundle (6,6). When prices are (2,4); Betty chooses C. When prices are (12,3) she chooses A. Which of the following is true？ A、A is directly revealed preferred to B. B、A is indirectly revealed preferred to B. C、C is directly revealed preferred to A. D、None of all