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

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.

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

Vessels must be（）valid certificate of nationality or certificated of registry or license.

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

Effects which are dutiable or subject to prohibitions or restrictions should be declared in （）.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

在许多衡量计算机系统能力的指标中，MIPS是用来衡量计算机系统的( )性能指标的。

TPC-C可以综合衡量系统的总体性能，衡量的指标包括（）

嵌入式系统按是否具有实时性能可分为嵌入式（）系统和嵌入式（）系统。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

嵌入式实时操作系统和嵌入式软实时操作系统有何特点？代表性铲平有哪些？在被业界公认的嵌入式实时操作系统中，实时性最出色的的RTOS是什么？应用开发与多媒体支持最出色的RTOS是什么？在大规模？产业化产品设计中最适合的RTOS是什么？