Utterance is based on （）;it is the realization of the abstract meaning of a sentence in a real situation of communication,or simply in a context.

A predictable result of a vessel nearing a bank or edge of a channel is that the（）.

Which is heavier, a pound of cotton or half a kilogram of gold?

______ is the address of a variable or a variable in which the address of another variable is stored.

______is the address of.a variable or a variable in which the address of another variable is stored.

Every deliberate act of wrongdoing by the master or any of the crew against the ship or cargo，without the authorization or privity of the Shipowner or his agent，is（）.

（ ）estimating is a technique for estimating the duration or cost of an activity ou project using historical data from a similar activity or project.

Passage ThreeHow can we get rid of garbage.9 Do we have enough energy sources to meet our future energy needs?These are two important questions that many people are asking today. Some people think that man might be able to solve both problems at the same time. They suggest using garbage as an energy source, and at the time it can save the land to hold garbage.For a long time, people buried garbage or dumped it on empty land. Now, empty land is scarce. But more and more garbage is produced each year. However, garbage can be a good fuel to use. The things in garbage do not look like coal, petroleum, or natural gas; but they are chemically similar to these fossil fuels. As we use up our fossil-fuel supplies, we might be able to use garbage as an energy source. Burning garbage is not a new idea. Some cities in Europe and the United States have been burning garbage for years. The heat that is produced by burning garbage is used to boil water. The steam that is produced is used to make electricity or to heat nearby buildings. In Paris, France, some power plants burn almost 2 million metric tons of the cities garbage each year. The amount of energy produced is about the same as would be produced by burning almost a half million barrels of oil.Our fossil fuel supplies are limited. Burning garbage might be one kind of energy source that we can use to help meet our energy needs.44. What two problems can man solve by burning garbage?

In a trunk type diesel engine piston, the thickness of the head or crown is determined by the（）
Ⅰ.statically balanced
Ⅱ.heat dissipation requirement

Which statement concerning reserve sources of energy for GMDSS is FALSE（）.

Heat energy is a source of power, but （） will cause damage to the engine.

The movement of heat within a fluid, caused by the application of thermal energy, is called （）.