Every one of us () that when any substance burns, it unites with oxygen. A、knowB、knowsC、have knownD、has known
Every one of us () that when any substance burns, it unites with oxygen.
A、know
B、knows
C、have known
D、has known
相关考题：
下列CASE语句中执行结果不为空的是() A、SELECTCASEWHEN125THEN'true'ELSE'false'END;B、SELECTCASEBINARY'B'WHEN'a'THEN1WHEN'b'THEN2END;C、SELECTCASEWHEN-10THEN'true'END;D、SELECTCASE'one'WHEN1THEN'one'WHEN2THEN'two'END;
We don’t have ______ fruit in the house.Let me buy ______.A、any, anyB、any, someC、a little, anyD、some, any
There are ______ books in your bag. But there aren’t ______ pens in it. A、some, someB、any ,someC、some, anyD、any,any
Whichtwotriggersaremousemovementtriggers?() A.When-Mouse-UpB.When-Mouse-MoveC.When-Mouse-DownD.When-Mouse-ClickE.When-Mouse-Leave
By default, how often does a router running IGRP send its complete routing table to its neighbors?() A. Every 5 minutesB. Every 90 secondsC. Every 60 secondsD. Every 30 seconds
Which three are characteristics of an IPV6 anycast address?() A.any-to-many communication modelB.delivery of packets to the group interface that is closest to the sending deviceC.one-to-many communication modelD.the same address for multiple devices in the groupE.one-to-nearest communication modelF.a unique IPV6 address for each device in the group
Each life jacket light that has a non-replaceable power source must be replaced ______．A.every 6 months after initial installationB.every 12 months after initial installationC.every 24 months after initial installationD.on or before the expiration date of the power source
Beef is an excellent material of iron.A: beginningB: storageC: sourceD: substance