Crude oil carriers often use （）

[单选题]In cleaning up an oil spill, the use of chemical agents would______.A．absorb the oil for easy removalB．remove the oil from the waterC．disperse or dissolve the oil in the waterD．not affect the oil

[单选题]An energy analyst forecasts that the price per barrel of crude oil five yea

[单选题]Injectors for use with heavy fuel oil must be cooled by either water or light oil to_____.A．prevent heat corrosion to internal componentsB．increase fuel delivery rate and economyC．prevent pre-ignitionD．avoid carbonization of the nozzle tips

[主观题]We often use the machine for making bicycles．(改为被动语态）The machine__________ often__________ for making bicycles by us．

[单选题]Recently,telecommunication carriers has been building ( ) core networks in order to effectively support various kinds of fixed and mobile broadband services.A． NGN B.social network C. mobile network D. AII -IP

[试题](Recently， telecommunication carriers has been building All-IP core networks in order to effectively support various kinds of fixed and mobile broadband services，such as up-and down-loading You tube and SNS（Social Networking Services）with rich video f

[名词解释] electron carriers (电子载体)

[单选题]In a typical fuel oil system, the oil is stored in tanks in the double bottom from which it is pumped to （） and heated.A . a service tankB . a collecting tankC . a sumpD . a settling tank

[单选题]The quality of the fuel oil and lube oil （）, Im afraid.A . has much to do with the operation of the engine and its lifeB . have much to do with the operation of the engine and its lifeC . has much doing with the operation of the engine and its lifeD

[单选题]Door-to-door services refer to carriers（）goods in the shippers＇and consignees＇ warehouse.A . sendingB . deliveringC . pickingupanddeliveringD . shipping