The major cause of anchor buoy pendant wire failures is（）.

A . An amount equal to the depth of the water B . Two times the depth of water C . Three to four times the depth of water D . Five to seven times the depth of water

A . deballasting the rig B . ballasting the rig C . paying out cable on the windward side D . paying out cable on the leeward side

A . charted depth of water only B . depth of water，including tidal differences C . time and date of anchoring D . type of anchor being used

A . amount of chain lying along the bottom increases B . length of the catenary is reduced C . mooring line tension is increased D . amount of chain lying along the bottom decrease

A . pigtail chain B . thrash chain C . crown chain D . wear chai

A . tension B . sadness C . anger D . relaxation

A . weight of cable to weight of vessel B . weight of cable to weight of anchor C . length of anchor to depth of water D . length of cable to depth of water

A . design of the anchor B . weight of the anchor C . scope of the anchor chain D . size of the vessel

A . Using a small scope ratio B . Replacing that portion with a short length of chain C . Using a hockle to keep that portion of the anchor line off the bottom D . Using a synthetic line

A . dirt B . fuel oil C . governor cooling water D . fuel oil tar

A、Cranes B、Winches C、Capstans D、Windlass

A . flukes and the shank B . shank and the sea bottom C . mooring line and the sea bottom D . flukes and the shackle

A . improper adjustments B . contaminated fuel C . kinked fuel lines D . excessive engine vibratio

A、decreases B、increases C、 remains the same D、has no relation to the scope

A . dredging ( of anchor ) B . dragging ( of anchor ) C . weighing anchor D . walking out anchor

A . prevent fouling of the anchor B . decrease swing of the vessel C . prevent dragging of the anchor D . reduce strain on the windla

A . excessive drive motor speed B . excessive pump discharge pressure C . too low of a tilting box angle D . insufficient drive motor speed

A . displacement tonnage B . weight forces C . buoyancy forces D . environmental force

A . maximum sustained vertical load an anchor will resist before dragging B . maximum sustained horizontal load an anchor will resist before dragging C . maximum sustained vertical load an anchor will resist before the mooring line breaks D . maximum sustained horizontal load an anchor will resist before the mooring line break

A．T B．F

A．正确 B．错误

Many of the chronic diseases risk and the diseases themselves overlap. In developed countries, cancer is the second-biggest cause of death after cardiovascular disease (CVD), and epidemiological evidence points to this trend emerging in the less developed world. This is particularly true in countries of "transition" or middle income countries such as in South America and Asia. Already more than half of all cancer cases occur in developing countries. There are approximately 20 million people living with cancer at the moment; by 2020 there will an estimated 30 million. And the impact is far greater than the number of cases alone would suggest.【2】Regardless of prognosis, the initial diagnosis is of- ten perceived by patients as life-threatening, with over one-third of sufferers experiencing clinical anxiety and depression. Cancer can also be profoundly distressing as well as economically disruptive to patients' families. The clinical care of cancer patients is a costly element in public health budgets. 【3】Dietary factors are estimated to account for approximately 30% of cancers in Western countries, making diet second only to tobacco as a preventable cause of cancer. This proportion is thought to be about 20% in developing countries and is projected to grow. As developing countries become urbanized, patterns of cancer, particularly those most strongly associated with diet and physical activity, tend to shift towards the patterns of economically developed countries. Cancer rates also change as populations move between countries and adopt different dietary patterns. The relative importance of cancers as a cause of death is increasing. The incidence of lung cancer and cancers of the colon and breast generally increases in parallel with economic development, as stomach cancer declines. Cancer is also strongly associated with social and economic status. Cancer risk factors are highest in groups with the least education. In addition, patients in the lower socioeconomic classes have consistently poorer survival rates than those in higher social class. In recent years, substantial evidence has pointed to the link from overweight and obesity, to many types of cancer such as breast and kidney.【4】The composition of the diet is also important since fruit and vegetables may have a protective effect by decreasing the risk for some cancer types such as oral and gastric cancer. Regular physical activity has also been seen to have a protective effect in reducing the risk of breast cancer. High intake of preserved meat or red meat might be associated with increased risk of colorectal cancer. Another aspect of diet clearly related to cancer risk is the high consumption of alcoholic beverages, which convincingly increase the risk of oral cavity, liver and breast cancers. The wealth of knowledge that already exists about cancer risk factors provides obvious and ample scope for action to reduce the cancer burden of all countries. After tobacco, overweight and obesity seems to be the most important avoidable cause of cancer. 【5】Given that poor nutrition, physical inactivity, obesity tobacco and alcohol are risk factors common to other chronic diseases such as CVD, type 2 diabetes, and respiratory diseases, conducting a cancer prevention program withi

A．faulting B．folding C．landslides D．tidal waves