更多"（） means the level for which minimu"的相关试题:
[单项选择]（） means the level for which appropriate additional protective security measures shall be maintained for a period of time as a result of heightened risk of a security incident.
A. Security level 1
B. Security level 2
C. Security level 3
D. Medium safe level
[单项选择]（）means the level for which further specific protective security measures shall be maintained for a limited period of time when a security incident is probable or imminent, although it may not be possible to identify the specific target.
A. Security level 1
B. Security level 2
C. Security level 3
D. Highest safety level
[单项选择]The minimum range at which a target can be detected is basically determined by which of the following?（）.
A. persistence
B. pulse repetition rate
C. pulse length
D. rotation rate
[单项选择]（）means a document which evidences a contract of carriage by sea and the taking over or loading of the goods by the carrier，and by which the carrier under takes to deliver the goods against surround of the document.
A. Bill of lading
B. Bill of exchange
C. Mate's receipt
D. Manifest
[单项选择]Which condition represents the appropriate time for setting off distress flares and rockets? （）
A. Only when there is a chance of their being seen by rescue vessels
B. At half hour intervals
C. At one hour intervals
D. Immediately upon abandoning the vessel
[单项选择]（）means a unit in which goods are totally enclosed by sufficient strong boundaries such as a freight container，a tank or a vehicle unit with fabric sides or tops.
A. UNIT
B. CONTAINER
C. VEHICLE
D. CLOSED TYPE UNIT
[单项选择]The minimum concentration of a vapor in air which can form an explosive mixture is called the（）.
A. auto-ignition point
B. flash point
C. lower explosive limit (LEL)
D. threshold limit value (TLV)
[单项选择]（）means a technique using digital codes which enables a radio station to establish contact with, and transfer information to another station or group of stations and complying with the relevant recommendations of the CCIR.
A. DSC
B. MSI
C. EGC
D. NBDP
[单项选择]Which is an acceptable means of correcting high mica between commutator bars?（）
A. undercutting
B. sanding
C. burnishing
D. filing
[单项选择]By which of the following means is force efficiently provided to vary the pitch of the blades on a modem controllable pitch propeller?（）
A. Hydraulic
B. Mechanical
C. Pneumatic
D. Electrical
[单项选择]Which device provides the main means in the GMDSS for locating ships in distress or their survival craft（）.
A. Radio direction finder
B. Satellite EPIRBs
C. MF/HF DSC
D. VHF homing device
[单项选择]Which switching mode provides the highest level of integrity and error-free transport, rather then maximizing speed?（）
A. 802.1q forwarding
B. VTP transparent mode
C. Cut-through
D. Store-and-forward
E. Fragment-free
F. Frame-filtering
[单项选择]The company which is defined in the ISM Code means（）
A. the owner of the ship
B. the manager who assumes the responsibility for operation of the ship
C. the bareboat charterer
D. All of the above
[单项选择]Which of the following can be obtained by means of an indicator card?（）
A. the peak pressure in a cylinder
B. the temperature of the cooling water
C. the fuel consumption
D. none of the above
[单项选择]Fire may ba spread by which means?（）.
A. Conduction of heat to adjacent surfaces
B. Direct radiation
C. Convection
D. All of the above
[单项选择]Fire may be spread by which means?（）.
A. Conduction of heat to adjacent surfaces
B. Direct radiation
C. Convection
D. All of the above
