The twist drill has（)cutting edges and two helical flutes that continue over the leng

A . proof bar B . shifting bar C . long bar D . spreader

A . landing area and sources of vapor ignition B . main deck C . engine room D . drill floor

A、main bearings B、connecting rod bearings C、piston pin bushings D、all of the above

A . Lashings are always required B . One container C . Two containers D . Three container

A . testing all alarm and detection systems B . breaking out and using the vessel's emergency equipment C . participation by selected crew members D . one person putting on protective clothing，if the vessel is so equipped

A . the scavenging air B . the exhaust gases C . the mixed air D . the spray oil

A . Operations Manual is approved B . Minerals Management Service approval is issued C . classification society approval is issued D . permanent Certificate of Inspection is issued

A . moon pool B . spider deck opening C . pontoon D . keyway

A . heavy-walled drill pipe B . tool joint C . down hole tool D . drill collar

A . The sea condition at the time of the drill B . Which survival craft was used C . The names of all crew members participating in the drill D . The name of the lifeboatman in charge of each boat

A . opposite direction from which the fibers are twisted together to form strands B . same direction the fibers are twisted to form strands C . opposite direction from which the fibers are twisted together to form the line D . opposite direction from which the fibers are twisted together forming cable

A . This is a 10 Mb/s switch port B . This is a 100 Mb/s switch port C . This is an Ethernet port operating at half duplex D . This is an Ethernet port operating at full duplex E . This is a port on a network interface card in a PC

A . pass out food and water to personnel B . open the doors and start the sprinkler system C . activate the emergency release handle D . open the doors and prepare the craft for boarding

A . 5 B . 3 C . 2 D . 1

A . load line certificate B . Operations Manual C . Safety of Life at Sea Certificate D . Certificate of Inspectio

A . In the logbook B . In the Operations Manual C . On the Certificate of Inspection D . On the muster list

A . Coast Guard B . American Bureau of Shipping C . Minerals Management Service D . Mine Safety and Health Administratio

A．the richness of the deposits B．the effectiveness of the ROV C．how much it lakes to mine the sea D．how profitable mineral mining is

此题为判断题(对，错)。

A.testing all alarm and detection systems B.breaking out and using the vessel's emergency equipment C.participation by selected crew members D.one person putting on protective clothing，if the vessel is so equipped

Now it's line that the human body has developed its millions of nerves to be highly aware of what goes on both inside and outside of it. This helps us adjust to the world. Without our nerves—and our brain, which is a bundle of nerves—we wouldn't know what's happening. But we pay for our sensitivity. We can feel pain when the slightest thing is wrong with any part of your body. The history of torture is based on the human body being open to pain. But there is a way to handle pain. Look at the Indian fakir who sits on a bed of nails. Fakirs can put a needle right through an arm. And feel no pain. This ability that some humans have developed to handle pain should give us ideas about how the mind can deal with pain. The big thing in withstanding pain is our attitude toward it. If the dentist says, "This will hurt a little", it helps us to accept the pain. By staying relaxed, and by treating the pain as an interesting sensation, we can handle the pain without falling apart. After all, although pain is an unpleasant sensation, it is still a sensation, and sensations are the stuff of life. The purpose of this passage is mainly to tell us ______. A．that pain is good for us B．to stop taking the "needle" at the dentist's C．how to handle pain D．how to avoid torture

A．drill a hole into the core of a volcano. B．bore into the rocks near the volcanic vent. C．conduct an imagery journey to the core of a volcano. D．regard magma as the core of Earth.

A．clear Griles of wrongdoing in it B．keep the drilling project going C．show Griles's innocence in all related allegations D．display Griles's inappropriate behavior, if not law-breaking