设a=2，b=3，c=4，d=5，下列表达式的值是（ ）。 3>2*b Or a=c And bc Or ba+c

Never make comment, estimate or guess in your logbook, but（）only.

Never make comment，estimate or guess in your Logbook，but（）only.

The guard, fencing or shielding for moving parts or machinery can be removed for repair only when the machinery it belongs to（）

It’s（）to stow optional cargo in the lower hold．You’d better give it block stowage in the tweendecks，then it can be easily discharged either at Shanghai，or Dalian or Tianjin.

lf a park visitor is hurt or in danger, cell phones make it easier to get help.

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（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）

可以在（）阶段采用Make-or-buy决策分析。

The（）may examine or re-examine the goods or take samples from them straightaway in the absence of the consignee or the consignor whenever it considers this necessary.

Never（）the lifeboat or lifecraft disengaging locks or hydrostatic release gears because it can cause them to fail to function.

Never（）the lifeboat or lifecraft disengaging hocks or hydrostatic release gears because it can cause them to fail to function.