If the firing pressures in a diesel engine are high, although the exhaust temperatures are normal, the cause may be（）

Eyes Can SpeakMuch meaning can be carried clearly, with our eyes, so it is often 41 that eyes can speak.Do you have such kind of 42 ? In a bus you may look at a stranger, but not too long. And if he 43 that he is being looked at, he may feel uncomfortable. The same in daily life. If you are looked at for more than necessary, you will look at yourself up and down, to see if there is 44 wrong with you. If nothing goes wrong, you will feel 45 toward the person who is looking at you that way. Eyes do speak, right?Looking too long at someone may seem to be impolite. But sometimes things are different. If a man looks at a woman for more than 10 seconds ,it may mean that he wishes to attract（吸引）her attention, to make her understand that he 46 her. When two people are in a conversation, the speaker will only look at the listener from time to time, 47 make sure that the listener does pay attention 48 what he or she is speaking. Lovers will enjoy looking at each other or being looked at for a long time, to show something that 49 cannot express.Clearly, eye contact should be done according to the relationship between two people and the place 50 you stay.41.__________

If a small fire initially breaks out in the engine room bilges, in which of the following sequences should the fire extinguishing agents or systems be used?（）

If a towing vessel and her tow are severely restricted in their ability to change course，they may show lights in addition to their towing identification lights. These additional lights may be shown if the tow is（）.

In automatic （） the winch may be overhauled and wire is paid off the barrel at a pre-determined maximum tension.

If the carrier and the shipper have agreed that the goods shall or may be carried on deck，the carrier must（）in the bill of lading a statement to that effect.

Although the Shipowner may be responsible for the loss or damage to the goods，his liability may be limited（）the terms of the contract or the statute.

A salvor may be（）the whole or part of the payment due under Salvage Convention to the extent that the salvage operations have become necessary or more difficult because of fault or neglect on his part or if the salvor has been guilty of fraud or other dishonest conduct.

are individuals and organizations that are actively involved in the project, or whose interests may be affected as aresult of project execution or project completion, they may also exert influence over the project and its results.

Sometimes lights are（）by fog，haze，dust，smoke，or precipitation which may be present at the light，or between the light and the observer，and which is possibly unknown by the observer.

Sometimes the contract（）that the lump sum freight must be paid in advance and will not be returnable even if the vessel and／or her cargo are lost.

If a refrigeration compressor is running continuously without lowering temperature as normal in the refrigerator, the trouble may be （）.