It can be inferred from the passage that________
A.natural materials are safe in food processing
B.chemicals are needed in food processing
C.food poisoning can be kept under control
D.food poisoning is out of control
查询订购单号首字符是“P”的订单信息，应该使用命令A．SELECT * FROM 订单 WHERE HEAD（订购单号，1）=“P”B．SELECT * FROM 订单 WHERE LEFT（订购单号,1）= “P”C．SELECT * FROM 订单 WHERE “P”$订购单号D．SELECT * FROM 订单 WHERE RIGHT（订购单号,1）= “P”
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查询订购单号首字符是"P"的订单信息,应该使用命令A．SELECT*FROM订单WHERE HEAD(订购单号,1)="P"B．SELECT*FROM订单WHERE LEFT(订购单号,1)="P"C．SELECT*FROM订单WHERE "P"$订购单号D．SELECT*FROM订单WHERE RIGHT(订购单号,1)="P"
These boxes were made of various _materials_______, including steel, wood, and paper.A. partsB. ideasC. sortsD. materials
Our tradition ______ be different _____ yours.A、can;withB、must;withC、need;asD、may;from
查询订购单号首字符是“P”的订单信息，应该使用命令A．SELECT*FROM订单WHERE HEAD(订购单号，1)="p"B．SELECT*FROM订单WHERE LEFT(订购单号，1)="p"C．SELECT*FROM订单WHERE"p"＄订购单号D．SELECT*FROM订单WHERE RIGHT(订购单号，1)="p"
查询订购单号首字符是“P”的订单信息，应该使用命令A．SELECT*FROM订单WHERE HEAD(订购单号，1)=“P”B．SELECT*FROM订单WHERE LEFT(订购单号，1)=“P”C．SELECT*FROM订单WHERE “P”$订购单号D．SELECT*FROM订单WHERE RIGHT(订购单号，1)=“P”
查询订购单号首字符是”P”的订单信息，应该使用命令A)SELECT*FROM订单WHERE HEAD（订购单号，1）=”P”B)SELECT*FROM订单WHERE LEFT（订购单号，1）=”P”C)SELECT*FROM订单WHERE “P” $ 订购单号D)SELECT*FROM订单WHERE RIGHT(订购单号,I)=”P”
