单项选择题

所示结构，杆Ⅰ的内力为下列何值？（　　）

A.见图A
B.见图B
C.见图C
D.见图D

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单项选择题

Which statement concerning locating signals in the GMDSS is FALSE ________．A.Locating signals are transmitted by survival craft VHF transceiversB.Locating signals are transmitted by SARTsC.Locating signals are intended to facilitate the finding of a distressed vessel or its survivorsD.Locating signals are not transmitted by autoalarm generators

A.A.Locating
B.Locating
C.Locating
D.Locating

单项选择题

Which statement concerning reserve sources of energy for GMDSS is FALSE ________．A.While the ship is at sea，there must be available at all times a supply of electrical energy sufficient to operate the radio installations and to charge any batteries used as part of a reserve source of energyB.Both the VHF and MF HF installations must be simultaneously suppliedC.A means of ensuring a continuous supply of electrical power must be provided to all GMDSS equipment that could be affected by an interruption in powerD.If a UPS or equivalent is used to supply power to the ship's GPS receiver or other source of positional information，a means must be provided to ensure the continuous supply of the information in the event of a failure to the ship's main or emergency source of power

A.A.While
B.Both
C.A
D.If

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