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单选题
The light rhythm of Morse (A) is shown on（）.
A
preferred-channel buoys
B
starboard- or port-side buoys
C
special marks
D
safe water buoys
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哪种情况下()提示患者有发生坠床跌倒的高度风险,护士需落实坠床跌倒的防范措施。
A、Morse评分≥45分、Humpty-Dumpty≥12分B、Morse评分≥40分、Humpty-Dumpty≥8分C、Morse评分≥45分、Humpty-Dumpty≥11分D、Morse评分≥40分、Humpty-Dumpty≥10分
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On a chart, the characteristic of the light on a lighthouse is shown as flashing white with a red sector. The red sector ______.A.indicates the limits of the navigable channelB.indicates a danger areaC.is used to identify the characteristics of the lightD.serves no significant purpose
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Horton Point Light ______.A.is 14 feet above sea levelB.has a fixed green lightC.is shown from a white square towerD.is synchronized with a radio beacon
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A vessel trawling will display a ______.A.red light over a white lightB.green light over a white lightC.yellow light over a red lightD.white light over a green light
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A buoy having red and green horizontal bands would have a light characteristic of ______.A.group occultingB.composite group flashingC.Morse letter AD.quick flashing
考题
根据以下材料，回答
Using a computer or smartphone at nightcan cause us to 11 on the pounds, new research has revealed.
The study found a link between blue light 12 --blue light is 13 by smartphones and tables--and increasedhunger. It found that exposure to the light increases hunger levels for severalhours and even increases hunger levels 14 eating a meal.
Results of the US study show thatblue-enriched light exposure, compared with 15 light exposure, was 16 with an increase in hunger that began 15minutes after light onset and was still present almost two hours after themeal. Blue light exposure has also already been shown to decreased 17 in the evening, increasing the risk ofinsomnia.
Study co-author Ivy Cheung, of NorthwesternUniversity in Chicago, said, "A single three-hour exposure toblue-enriched light in the evening 18 impacted hunger andglucose metabolism." "These results are important because theysuggest that 19 environmental light exposure for humansmay represent a novel 20 of influencing food intake patterns andmetabolism."
The study group 21 10 healthy adults with regular sleep and eating schedules who received
22 carbohydrate-rich meals. They completed afour-day trial 23 dim light conditions, which involvedexposure to less than 20 lux during 16 hours 24 and less than three lux duringeight hours of sleep. On day three they were exposed to three hours of 260 lux,blue-enriched light starting 10.5 hours after waking up, and the effects werecompared with dim light exposure on day two.
Ms Cheung said more research is needed todetermine the 25 of action involved in the relationshipbetween light exposure, hunger and metabolism.A.operating
B.manipulating
C.conducting
D.making
考题
Which of the following is the process a scanner uses to scan images to a computer？（）A、Light is shown through the image and onto the scanner headB、Light is reflected off a mirror onto the Charged Coupled Device （CCD）C、Light is flashed off a mirror onto the CCDD、Light is reflected off the image and into a camera
考题
产生彩色投影必须调整下面哪个参数（）A、light的light transmission设为100%B、light的light transmission设为0%C、投影层的阴影层的light transmission设为80%D、接受阴影层的light transmission设为100%
考题
单选题A preferred-channel buoy will show a（）.A
white light whose characteristic is Morse (A)B
group-occulting white lightC
composite group-flashing (2 + 1) white lightD
composite group-flashing (2 + 1) red or green light
考题
单选题What best describes the structure from which Stratford Point Light is shown?（）A
Brown conical tower with white horizontal band in center of light on black pierB
Red conical tower on brown cylindrical pierC
White octagonal house on brown cylindrical pierD
White conical tower，with brown band midway of height
考题
单选题An anchored vessel on pilotage duty must show which light(s) at night? （）A
A sternlight onlyB
Anchor lights onlyC
A white light over a red light onlyD
A white light over a red light and anchor lights
考题
单选题A vessel trawling will display a（）.A
red light over a white lightB
green light over a white lightC
yellow light over a red lightD
white light over a green light
考题
单选题A hollow-cathode lamp is（）A
A broad-band light sourceB
A narrow-band light sourceC
A light detectorD
Not a light source
考题
单选题打开锚灯！ （）A
Switch on the deck light!B
Switch on the anchor light!C
Switch on the cargo light!D
Switch on the hold light!
考题
单选题On entering from seaward，a starboard side daymark will（）.A
show a fixed red light if lightedB
show a Morse (A) white lightC
be square in shapeD
have an even number if numbered
考题
单选题A pilot vessel on pilotage duty at night will show sidelights and a stern light （）.A
when at anchorB
only when making wayC
at any time when underwayD
only when the identifying lights are not being shown
考题
单选题Which statement concerning Montauk Point Light is TRUE（）.A
The light comes on at sunsetB
There is an emergency light if the main light is extinguishedC
The height of the light is 24 feetD
The tower is painted with black and white stripes
考题
单选题How is a safe water mark，that can be passed close aboard on either side，painted and lighted?（）A
Black and white stripes with an interrupted quick flashing lightB
Black and red stripes with a Morse (A) lightC
Black and red stripes with an interrupted quick flashing lightD
Red and white stripes with a Morse (A) light
考题
单选题A special mark (yellow buoy)，if lighted，may exhibit which light rhythm?（）A
FlashingB
Morse AC
Equal intervalD
Occulting
考题
单选题On a chart，the characteristic of the light on a lighthouse is shown as flashing white with a red sector.The red sector（）.A
Indicates the limits of the navigable channelB
Indicates a danger areaC
Is used to identify the characteristics of the lightD
Serves no significant purpose
考题
单选题Horton Point Light（）.A
is 14 feet above sea levelB
has a fixed green lightC
is shown from a white square towerD
is synchronized with a radio beacon
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