更多"放射性同位素示踪技术 radio isotope tracer tec"的相关试题:
[名词解释]稳定性同位素示踪技术 stable isotope tracer technique
[单项选择]防御性研究主要是跟随踪技术发展动向，着眼于（）。
A. 建立与保持企业的竞争优势
B. 企业未来的发展需要
C. 占领市场
D. 获取现实的创新收益
[名词解释]示踪测定 isotopic tracer
[单项选择]Which statement about radio navigational warnings is TRUE（）.
A. The topics for warnings included in HYDROLANTS，HYDROPACS，and NAVAREA warnings are the same
B. NAVAREA warnings concern only coastal navigation and inland navigation in large bays or sounds such as Puget Sound
C. The United States is responsible for NAVAREA warnings in the North Atlantic north of 7°N，and west of 15°W
D. Long range radio navigational warnings are usually broadcast by radiotelephone，radiotelegraph，and radio-teletypewriter
[单项选择]General radio communications in the global system are those between（）concerning the management and operation of the ships and may have impact on their safety.
A. SAR party and the ship in distress
B. SAR authorities and the ship in distress and survival craft
C. A ship station and any coast station
D. Ship stations and shore-based communication network
[单项选择]（）communication are intership VHF radio telephone communication.
A. ship-to-shore
B. shore-to –ship
C. bridge-to-bridge
[单项选择]Details of coast radio stations and radar stations can be found in（）.
A. Admiralty Chart
B. Admiralty Light list
C. Admiralty List of Radio Signals
D. Admiralty Notices to Mariners
[单项选择]What is the fundamental purpose for imposing radio silence? （）
A. To ensure that interference to proprietary communications is minimized
B. To ensure that only voice communications can be effected on the distress frequency or channel
C. To ensure that a distressed vessel will have a "window" twice each hour for transmitting routine messages
D. To ensure that interference on a particular frequency or channel to communications concerning emergency traffic is minimized
[单项选择]Please be advised that my radio transmitter broke downn and needs（）.
A. repair
B. repairing
C. to repair
D. be repaired
[单项选择]A RADIO SIGNAL FROM A DISTRESSED VESSEL AUTOMATICALLY DIRECTED TO A RCC GIVING POSITION，IDENTIFICATION，COURSE AND SPEED OF THE VESSEL AS WELL AS THE NATURE OF DISTRESS is known as（）.
A. Distress alert
B. Safety alert
C. Emergency alert
D. General alert
[单项选择]The portable radio apparatus means（）.
A. the radio apparatus fitted on the portside
B. the radio with a portable equipment
C. the radio equipment which is easily movable
D. the portable radio with some apparatus
[单项选择]The existing terrestrial radio system has a number of basic flaws which（）.
A. can be overcome by using traditional techniques
B. cannot be overcome by satellite system
C. can be overcome by satellite and digital techniques
D. cannot be tackled by any modern system
[单项选择]Which maintenance functions can a GMDSS Radio Operator perform（）.
A. The Operator can make fine internal adjustments to the transmitter as long as the output power does not change by more than one percent
B. The Operator is responsible for ensuring that INMARSAT antennas are free of built-up soot and clear of obstacles
C. All levels of maintenance must be performed by a licensed GMDSS Radio Maintainer
D. The Operator may install an EPROM in order to ensure that the equipment continues to operate within legal constraints
[单项选择]Routine radio communications should be no more than（）.
A. one minute
B. three minutes
C. five minutes
D. eight minutes
[单项选择]Radiotelephony communication or radio telex communication or both will be carried out by terrestrial or satellite means,（）the equipment fitted on ship and the area in which the incident occurs.
A. depend on
B. depending on
C. dependent on
D. depended on
