A small light tackle with blocks of steel or wood that is used for miscellaneous small jobs is called a（）.

（）is a space system using one or more artificial earth satellites.

（）is a space system using one or more artificial earth satellites.

Generally speaking, suction heads require to be （） for high speed or large capacities than for low speed or small capacities.

What is a functional or carriage requirement for compulsory vessels?（）

What is a GMDSS functional or carriage requirement for compulsory vessels?（）

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（）.

（）, or drum is used for hauling in or letting out the wires or ropes which will fasten the ship to the shore.

The （） is used for hauling in or letting out the wires or ropes.

When loading or discharging dry mud or cement，crew members should use goggles and（）.

Banks have no liability for any delay or loss caused by postal or telex failure.

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