搜题

【单选题】

The opening of cursor CSR01 produces the following result set: STUDENT LASTNM FIRSTNM CLASSNO 123 Brown John T100 213 Bailey James T100 312 Carter Arlene T210 465 Chas Devon T305 546 Davis Steven T405 If this Fetch statement is executed: FETCH csr01 INTO :studnum, :firstname, :lastname, :class Which of the following DELETE statements will cause this row to be deleted?（）

A、DELETE ALL FROM tab01 FOR CURRENT OF csr01

B、DELETE FROM tab01 FOR CURRENT csr01 WITH RS

C、DELETE * FROM tab01 WHERE CURRENT csr01 WITH CS

D、DELETE FROM tab01 WHERE CURRENT OF csr01 WITH RR

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更多“ The opening of cursor CSR01 produces the following result set: STUDENT LASTNM FIRSTNM CLASSNO 123 Brown John T100 213 Bailey James T100 312 Carter Arlene T210 465 Chas Devon T305 546 Davis Steven T405 If this Fetch statement is executed: FETCH csr01 INTO :studnum, :firstname, :lastname, :class Which of the following DELETE statements will cause this row to be deleted?（）”相关的问题

第1题

[单选题] You are investigating the performance of the server and see the following information: Events_waits_summary_global_by_event_name in the performance schema shows that the wait/synch/mutex/sql/LOCK_table_cache event is dominating other wait events. The table_open_cache_overflows status variable is 0. Which action should be taken to remove the performance bottleneck described here?（）

A、Increase the value of table_definition_cache B、Increase the value of table_open_cache_instances C、Decrease the value of table_open_cache_instances D、Increase the value of table_open_cache E、Decrease the value of table_definition_cache F、Decrease the value of table_open_cache

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第2题

[单选题] Your company has a server named Printer1 that runs Windows Server 2008 R2. Printer1 has the Print and Document Services server role installed.You need to reduce the number of events registered in the system log on Printer1. What should you do?（）

A、Open the Event Viewer console. Create a custom view for the system log. Exclude the events that are notified by Event ID 10 from the filter. B、Open the Print Management console. Open the properties of Printer1 and clear the Log spooler information events option. C、Open the Print Management console. Open the properties of Printer1 and clear the Show informational notifications for network printers option. D、Open the Print Management console. Open the properties of each individual printer on Printer1 and clear the Enable advanced printing features option.

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第3题

[单选题] The shape of a cam on a diesel engine determines the valve’s （）

A、point of opening B、speed of opening C、lift from its seat D、all of the above

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第4题

[] Which of the following statements is NOT true?（）

A、A.The open field system provided a good opportunity to experiment. B、B.The open field system wasted land. C、C.The open field system was wasteful of labor and time. D、D.The open field system made livestock farming difficult.

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第5题

[] Your company has a server named Printer1 that runs Windows Server 2008 R2. Printer1 has the Print and Document Services server role installed.You need to reduce the number of events registered in the system log on Printer1.What should you do？（）

A、A. Open the Event Viewer console. Create a custom view for the system log. Exclude the events that are notified by Event ID 10 from the filter. B、B. Open the Print Management console. Open the properties of Printer1 and clear the Log spooler information events option. C、C. Open the Print Management console. Open the properties of Printer1 and clear the Show informational notifications for network printers option. D、D. Open the Print Management console. Open the properties of each individual printer on Printer1 and clear the Enable advanced printing features option.

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第6题

[单选题] Ice blink is（）.

A、the dark appearance of the underside of a cloud layer due to reflection of a surface of open water B、the soft light appearance on the underside of a cloud layer due to reflection from a surface of open water C、the yellowish-white glare on the underside of a cloud layer D、water sky

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第7题

[单选题] Classification of vowels is made up of the following EXCEPT（）。

A、the openness of the mouth B、the position of the tongue C、the shape of the tip D、the width of the vowels

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第8题

[单选题] 开关舱的工作通常是由船员来做。（）

A、The work of opening and closing hatches is usually done by crew members. B、The work of opening and closing hatch covers is usually done by crew members. C、The work of opening hatch covers is usually done by crew members. D、The work of closing hatch covers is usually done by crew members.

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第9题

[单选题] The principal difference between loop scavenging and crossflow scavenging, as used in single acting diesel engines, is the （）

A、direction of air flow within the cylinder B、sequence of port opening C、method of opening exhaust ports D、volume of air admitted to the cylinder

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第10题

[单选题] When checking the liquid level in a tank, you should position yourself （）.

A、on the windward side of the opening B、on the leeward side of the opening C、at a right angle to the wind direction D、so that the obstruction of your body will protect you from the fumes

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