Boiler steel must have % carbon in it（）

By regulation，your cargo vessel must have（）.

A . sufficient facilities for the crew to wash their clothes B . a wash basin in each room C . separate toilet facilities for engineers where their number exceeds six D . All of the above

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He must have had an accident，or he（）then．

A . would have been here B . should be here C . had to be here D . would be here

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You have a domain that was created and configured with WebLogic 10.3.5. You want to upgrade the domain to use WebLogic 12c. Which Oracle tool must you use to upgrade your domain?（）

A . Oracle WebLogic Domain Upgrade tool B . Smart Update C . Smart Upgrade D . No tool required, just install WebLogic 12c, update the domain to point to the new WebLogic installation and start your domain. E . JDeveloper

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The soot blowers are operating in the oil fuel boiler the air/fuel ratio must （） throughout the action, and blowers greased after use.

A . be increased B . be decreased C . remain constant D . either be increased or remain constant

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Vessel required to have an Automatic Radar Plotting Aid must have a device to indicate the（）.

A . speed of the vessel over the ground or through the water B . distance to the next port C . time of the next navigational satellite pass D . None of the above

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You have a computer that runs Windows 7. You manually create a system restore point. You need torestore a copy of a file stored on drive C from two days ago. You must achieve this goal in the minimumamount of time. What should you do?（）

A . From Recovery, select System Restore. B . From Backup and Restore, select Restore my files. C . From the command prompt, run Wbadmin get items. D . From the properties of the file, select Previous Versions.

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We have no steel wire．You had better（）us one.

A . borrow B . lend C . take D . let

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A record of the types and strengths of steels used on a ship must be included in the（）.

A . general plans B . builder's documentation C . Certificate of Inspection D . construction portfolio

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斯第尔（C.M.Steele）的社会研究发现，后来的行为表现最为积极的是（）

A . 给予肯定标定的被试 B . 给予否定标定的被试 C . 给予不贴切标定的被式 D . 没有给予标定的被试

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A firemans outfit carried onboard cargo vessels, must have a （）.

A . canister-type gas mask B . fresh-air breathing apparatus C . self-contained breathing apparatus D . combustible gas indicator

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In the event of a flame failure in an auxiliary water-tube boiler, you must（）

A . relight the boiler immediately to prevent loss of steam pressure B . relight the fire off the brickwork as the bricks are cherry red C . purge the furnace of any combustible gases before attempting to relight the fire D . speed up the feed pump to prevent dry firing when the burner flame is reestablished

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Good speaker must have perfect pronunciations.

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Les Shield, _______, a boiler technician, was made redundant from British Steel at Consett in______________.

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The listening activities must have a real ,communicative ______ .

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To be a Thesis statement,it must have 3 features( )?

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“He must have had on some really nice pants. ”翻译为:( ).

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73. If you have steel wire ropes leading in the same direction with other ropes, which will take the most of the load?

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——I can't get through to the general manager's office anyhow.——The line is busy. Someone___ the telephone.A.must use B.usesC.must have been using D. must be using

A、 B、 C、 D、

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Modem industry must have developed ______ .

A．before the Middle Ages B．in Greece or Rome C．around the 19th century D．until the 19th century

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Exchange students must have the following qualifications EXCEPT

A．over 11/12 years of education. B．speaking English well. C．a good record in school. D．being 15 to 18 years old.

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Everybody must have____ own choice.

A．A.your B．B.one's C．C.their D．D.her

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That must have made you feel happy, ________?