【单选题】If no signal is sent from the command spot, what will happen to the train?
A.
It will stop automatically.
B.
It will move on at the same speed.
C.
It will gradually slow down.
D.
It will keep a safe distance from the other trains.
【单选题】您如何把 "Persons" 表中 "LastName" 列的 "Gates" 改为 "Wilson" ?
A.
MODIFY Persons SET LastName='Wilson' WHERE LastName='Gates'
B.
UPDATE Persons SET LastName='Wilson' WHERE LastName='Gates'
C.
UPDATE Persons SET LastName='Wilson' INTO LastName='Gates'
D.
MODIFY Persons SET LastName='Wilson' INTO LastName='Gates'
【单选题】Why did China stop the import of feed from the European Union?
A.
Because it's a great waste of money.
B.
Because doing this can keep the disease from spreading in China.
C.
Because we must use our own feed.
【单选题】stop from,keep from和pr from We should ( ) the widow from opening in the winter.
【简答题】【写作训练】 训练1:请依据下面的信息撰写一封邀请函 北京市商务委员会邀请各省、自治区、直辖市、计划单列市及生产建设兵团商务主管部门参加2015中国(北京)电子商务大会,相关材料如下,请参考去函模板,撰写一则邀请函: (1)致函事由:邀请参加2015中国(北京)电子商务大会 (2)致函事项: 自2011年以来,由商务部和北京市人民政府共同支持的中国(北京)电子商务大会(简称大会)已在京成功举办...
【单选题】您如何把 "Persons" 表中 "LastName" 列的 "Gates" 改为 "Wilson" ?
A.
MODIFY Persons SET LastName='Wilson' WHERE LastName='Gates'
B.
UPDATE Persons SET LastName='Wilson' WHERE LastName='Gates'
C.
MODIFY Persons SET LastName='Wilson' INTO LastName='Gates'