Tourists can take（）trips into space in

1、In machinery space, the valves, pipes

In machinery space, the valves, pipes should be（）Aarranged as close to each other as possible to save spaceBarranged far away from each other...

2、I can not take any actions to avoid cl

I can not take any actions to avoid close quarters situation with you，because your navigation lights（）.Ais not visibleBare not invisibleCare not visibleDcan easily be see

3、Tripping defects in anchors frequently

Tripping defects in anchors frequently occur in（）.Adeep waterBshallow waterCstiff soilsDsoft soil

4、Fly ash can partly take the place of _

Fly ash can partly take the place of ______.A paving materialB cementC concreteD the coal by-product

5、You can take as many as you like becau

You can take as many as you like because these handouts are free of（）AfareBchargeCmoneyDpay

6、In ship construction, frame spacing is

In ship construction, frame spacing is（）.Agreater at the bow and sternBreduced at the bow and sternCuniform over the length of the vesselDunif...