In order to communicate the threat at a port facility or for a ship, the Contracting Government will set the appropriate security levels Security level 1 corresponds to（）

It should be apparent that little or nothing is gained by opening a drain at the same time as or after admitting steamThe above sentence probably means （）.

Project（71）is an uncertain event or condition that，if it occurs，has a positive or a negative effect on at least one project objective，such as time，cost，scope，or quality．

Project ______is an uncertain event or condition that，if it occurs，has a positive or a negative effect on at least one project objective，such as time，cost，scope，or quality．

● Project（71）is an uncertain event or condition that, if it occurs, has a positive or a negative effect on at least one project objective, such as time, cost, scope, or quality.（71）

 ______ twice a year, whether it is a car or a bus or a truck, is the rule that every driver must obey in this city.

It will be a relief over the death of a friend or a relative if the friend or relative dies from ______.

When a cargo boom or crane is rated at varying capacities，there will be a table at the controls which relates safe working load to（）.

● Insufficient （71）can cause a processor to work at 50% or even more below itsperformance potential.（71）

Insufficient(71)can cause a processor to work at 50% or even more below its performance potential.

A mark or place at which a vessel comes under obligatory entry，transit，or escort procedure is know as（）.

（）refers to a word or expression that is prohibited by the “polite” society from general use.