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When an operator is trying to log off the system displays this message: you have running jobs?? What does this mean?（）
A . One or more processes are running in the background, preventing log off.
B . One or more processes are paused, requiring operator input prior to logging off.
C . At least one process is running in the background and it will keep running after the operator logs off
D . At least one process is running in the background using nohup and it will terminate when the operator logs off
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Which vessel when anchored at night，would not be required to show anchor lights? （）
A . A vessel engaged in underwater operations
B . A vessel engaged in mine clearance
C . A vessel engaged on pilotage duty
D . A vessel engaged in survey operatio
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The inside light in an inflatable liferaft is turned on（）.
A . automatically as the liferaft inflates
B . with a switch near the boarding handle
C . at night because the light has a photosensitive switch
D . by screwing the bulb in after the raft is inflated
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The question "How fast did he drive when he ran the red light?" ____ “He ran the red light”
A . presupposes
B . entails
C . contradicts
D . includes
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When entering from seaward，a buoy displaying a single-flashing red light would indicate （）.
A . a junction with the preferred channel to the left
B . a sharp turn in the channel to the right
C . the starboard side of the channel
D . a wreck to be left on the vessel's port side
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While underway at night you observe a vessel’s range lights in line off your starboard beam． You should（）.
A . come right
B . sound the danger signal
C . continue on your course
D . come left
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Which vessel，when anchored at night，is NOT required to show anchor lights?（）.
A . A power-driven vessel
B . A vessel engaged on pilotage duty
C . A vessel dredging
D . A vessel restricted in her ability to maneuver
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Which action must be taken when an individual cargo tank is closed off from the inert gas system by the tank isolation valve?（）
A . The tank must be gas freed
B . The tank must be ballasted
C . The tank must be vented to the atmosphere
D . The bypass valve must also be closed
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When making landfall at night，you can determine if a light is a major light or an offshore buoy by（）.
A . the intensity of the light
B . checking the period and characteristics against the Light List
C . the color，because the buoy will have only a red or a green light
D . Any of the above can be used to identify the light
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Prior to lighting off a cold automatically fired auxiliary boiler, you should （）.
A . check and regulate the water level
B . close the air cock once fires are lit
C . blowdown the gage glass
D . crack the steam stop to assure protective steam flow
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Prior to lighting off a cold automatically fired auxiliary boiler, yon should （）.
A . check and regulate the water level
B . close the air cock once fires are lit
C . blowdown the gage glass
D . crack the steam stop to assure protective steam flow
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An occulting light is one in which （）.
A . the period of darkness exceeds the period of light
B . there is only a partial eclipse of the light
C . the periods of light and darkness are equal
D . the period of light exceeds the period of darkne
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46.—You have left the light on. —Oh ， so I have.________ and turn it off.
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Turn off the lights______ you go to bed.
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动作选择开关的功能是选择受光动作(Light) 或遮光动作 (Drag)模式。当此开关按逆时针方向充分旋转时（D侧），则进入检测-OFF模式，没有检测到物料时动作表示灯亮。（ ）
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He ________(turn)off the light. We can leave now.
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\Heat and light can be given off by this chemical change\可译为\这种化学反应能放出光和热\,这种翻译方式属于被动语态翻译中的()。
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When wood is burnt, it heat and light, together with heavy smoke.
A.give up
B.sends up
C.sends away
D.sends out
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To us it seems so natural to put up an umbrella to keep the water off when it rains. But actually the umbrella was not invented as protection against rain. Its first use was as a shade against the sun.
Nobody knows who first invented it, but the umbrella was used in very ancient times. Probably the first to use it were the Chinese, way back in the eleventh century B.C.
We know that the umbrella was used in ancient Egypt and Babylon as a sunshade. And there was a strange thing connected with its use: it became a symbol of honor and authority. In the Far East in ancient times, the umbrella was allowed to be used only by royalty or by those in high office.
In Europe, the Greeks were the first to use the umbrella as a sunshade. And the umbrella was in common use in ancient Greece. But it is believed that the first persons in Europe to use the umbrella as protection against the rain were the ancient Romans.
During the Middle Ages, the use of the umbrella practically disappeared. Then it appeared again in Italy in the late sixteenth century. And again it was considered a symbol of power and authority. By 1680, The umbrella appeared in France, and later on in England.
By the eighteenth century, the umbrella was used against rain throughout most of Europe. Umbrellas have not changed much in style. during all this time, though they have become much lighter in weight. It wasn't until the twentieth century that women's umbrellas began to be made, in a whole variety of colors.
The first use of umbrella was as ______.
A．protection against rain
B．a shade against the sun
C．a symbol of power
D．a symbol of honor
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He turned off the lights and then__________theroom.
A.leaved
B.leaves
C.left
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32 Light pollution occurs when
A artificial lights illuminate the night sky.
B the moon lights up the night sky.
C too many stars are visible in the night sky
D streetlights are turned off.
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Kam Bergeron, CFA, is an equity portfolio manager who often takes time off in the afternoon to play golf with important clients. Today, Bergeron is on the golf course when his game is interrupted by a
A、Suitability
B、Priority of transactions
C、Diligence and reasonable basis
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听力原文： An explosion in a Pennsylvania coal mine killed one worker Monday, but five other miners escaped. The blast went off 2,300 feet underground at the R&D coal mine in Schuylkill County. Some officials say it appears a blast went off in the anthracite mine when workers detonated the explosives, but that’s still under investigation.
The process right now is to continue the interviews and then get back down underground and complete the inspections and in that way we can complete the investigation as to what happened.
The brother-in-law of the miner killed says 43-year-old Dlae Reightler worked at the mine since he was a teenager and that he dreamed of moving his wife and four children, setting up an auto-repair business.
He did it all his life. He did that and worked on cars in his garage backyard. He enjoyed doing that stuff.
At the mine, the accident knocked out the ventilation system, making it too dangerous for investigators to go down into the mine shaft. Regulators ordered the facility closed until the investigation is complete. The area has the nation’s only deposits of anthracite, a type of hard, clean burning coal. A June inspection of the site turned up no violations and violations detected in August were fixed on site.
The investigation was dangerous because ______.
A．the mine was badly damaged
B．the ventilation system was broken
C．the mine was too deep
D．the safety facility was destroyed
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In Britain, when there is no fog, the use of fog lights is an offence, for ------receive a $ 30 fine.you may
A．what
B． which
C． those
D． that
