Before a guest's name is put on waiting list, Click-Ahead Seating calls his cell phone for comfirmation.()
Before a guest's name is put on waiting list, Click-Ahead Seating calls his cell phone for comfirmation.()
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34.HashMapprops=newHashMap（）；35.props.put（”key45”，somevalue”）；36.props.put（”key12”，someothervalue”）；37.props.put（”key39”，yetanothervalue”）；38.Sets=props.keySet（）；39.//insertcodehereWhat，insertedatline39，willsortthekeysinthepropsHashMap？（）A.Arrays.sort（s）；B.s=newTreeSet（s）；C.Collections.sort（s）；D.s=newSortedSet（s）；
Review the definition of the phone_list view.CHEATE OR REPLACE ALGORITHM=MERGE DEFINER= ‘root‘@localhost‘ SQL SECURITY DEFINER VIEW ‘phone_list‘ AS SELECTe . id as id ‘e . first_name AS ‘first_name‘ ‘e . last_name AS ‘last_name‘ ‘coalesce ( ph1.phone_no, ‘ – ‘) AS ‘office_no‘ ‘coalesce (ph2 .phone_no, ‘ – ‘) AS ‘cell_no‘ FROM employees e LEFT JOIN employee_phone ph1 ON ph1.emp_id = e.id AND ph1.type = ‘office‘ LEFT JOIN employee_phone ph2 ON ph2 .emp_id = e.id AND ph2 .type = ‘mobile‘The tables employees and employee_phone are InnoDB tables;all columns are used in this view. The contents of the phone_list view are as follows: Mysql select * from phone_list; 1 row in set (0.00 sec)Which method can you use to change the cell_no value to ‘555-8888‘ for John Doe?（）A.INSERT INTO employee_phone (emp_id, phone_no, type) VALUES (1, ‘555-8888‘,‘mobile‘)B.UPDATE phone_list SET cell_name ‘555-8888‘ WHERE first_name= ‘John‘ and last_name= ‘Doe‘C.DELETE FROM phone_list WHERE first_name= ‘John‘ and last_name= ‘Doe‘; INSERT INTO phone_list (first_name, last_name, office_no, cell_no) VALUES (‘John‘ , ‘Doe‘ , ‘x1234‘ , ‘555-8888)D.UPDATE employee_phone SET phone_no= ‘555-8888‘ where emp_id=1
给定如下Java程序代码片段,编译运行这段代码,结果是( )。java.util.HashMapmap=newjava.util.HashMap();map.put("name",null);map.put("name","Jack");System.out.println(map.get("name"));A.nullB.JackC.nullJackD.运行时出现异常
The Neutrality of American in the Early World War IIThe establishment of the Third Reich influenced events in American history by starting a chain of events whichculminated in war between Germany and the United States.The compete destruction of democracy,the persecution of Jews,the war on religion,the cruelty and barbarism of the Nazis,and especially the plans of Germany and her allies,Italy andJapan,for world conquest caused great indignation in this country and brought on fear of another world war.While speaking out against Hitler's atrocities,the American people generally favored is out against policies andneutrality.The Neutrality Acts of 1935 and 1936 prohibited trade with any belligerents or loans to them.In 1937 the Presidentwas empowered to declare an arms embargo in wars between nations at his discretion.American opinion began to change somewhat after President Roosevelt's“quarantine the aggressor”speech at Chicago(1937)in which he severely criticized Hitler's policies.Germany's seizure of Austria and the Munich Pact for the partition ofCzechoslovakia(1938)also aroused the American people.The conquest of Czechoslovakia in March,1939 was another rude awakening to the menace of the Third Reich.InAugust,1939 came the shock of the Nazi-soviet Pact and in September the attack on Poland and the outbreak of Europeanwar.The United States attempted to maintain neutrality in spite of sympathy for the democracies arrayed against the ThirdReich.The Neutrality Act of 1939 repealed the arms embargo and permitted“cash and carry”exports of arms to belligerentnations.A strong national defense program was begun.A draft act was passed(1940)to strengthen the military services.A Lend-lease Act(1941)authorized the President tosell,exchange,or lend materials to any country deemed necessary by him for the defense of the United States.Help wasgiven to Britain by exchanging certain overage destroyers for the right to establish American bases in British territory in theWestern Hemisphere.In August,1940 President Roosevelt and Prime Minister Churchill met and issued the Atlantic Charterwhich proclaimed the kind of a world which should be established after the war.In December,1941,Japan launched the unprovoked attack on the United States at Pearl Harbor.Immediately thereafter,Germany declared war on the United States.One?item?occurring?before?1937?that?the?author?does?not?mention?in?his?list?of?actionsthat?alienated the?American?public?was _______.A.theburningoftheReichstag.B.Germanplansforconquest.C.Nazibarbarism.D.the persecution of religious groups.
某html文档中有如下代码，则在浏览器中打开该文档时显示为( )。＜form＞ List1: ＜inputtype="text"name="List1"/＞ ＜br/＞ LiSt2: ＜inputtype="text"name="List2"/＞ ＜/form＞
已知一张表student存储在HBase中，向表中插入一条记录{id:2015001,name:Mary,{score:math}:88}，其id作为行键，其中，在插入数学成绩88分时，正确的命令是A．put 'student','2015001','score:math','88'B．put 'student','2015001','88'C．put 'student','2015001','math','88'D．put 'student','score:math','88'
已知表student存储在HBase中，向表中插入记录{id:2015001,name:Mary,{score:math}:88}，其id作为行键，其中，在插入数学成绩88分时，正确的命令是（）。A．put 'student','2015001','88'B．put 'student','2015001','score:math','88'C．put 'student','2015001','math','88'D．put 'student','score:math','88'
给定如下Java 程序代码片段，编译运行这段代码，结果是 java.util.HashMap map = new java.util.HashMap（); map.put（"name",null); map.put（"name","Jack"); System.out.println（map.get（"name"));A．nullB．JackC．nullJackD．运行时出现异常