（）there danger of explosion?

1、After an explosion，repair of emergency

After an explosion，repair of emergency machinery and services should be accomplished（）.Aafter control of fire，flooding，and structural repairsBimm...

2、0ne of the principal dangers inherent

0ne of the principal dangers inherent in liquified petroleum gas is（）.Aas it warms up it becomes heavier than airBthe way it reacts with sea waterCthe strong odor it producesDits low temperature causes frostbite or freezing

3、There is no danger. Please keep（）.

There is no danger. Please keep（）.AcalmBsilentCquietDpeaceful

4、Acrobats and gymnasts are in danger of

Acrobats and gymnasts are in danger of hurting themselves in Cirque du Soleil performances because______.A they havent practiced enoughB the equipment is in need of repairsC they perform. risky acts without netsD some are HIV positive

5、There is a danger of the starting curr

There is a danger of the starting current that the windings are burnt out（）Ato increaseBto be so increasedCincreasedDbeing so increased

6、All of our export dangerous cargo is（）

All of our export dangerous cargo is（）examined before shipment.AthoughBthroughCthoroughDthoroughly