【简答题】如图所示为某实际问题逻辑抽象的真值表。则结果的最小项表达式F=( )(非用“'”表示如A'B'C'对应最小项m0,按从小到大的顺序写),将表达式化简得最简与或式F=( )(书写时注意一个与项中字母按照字母表的顺序填写,否则系统判错,如AB不要写成BA),根据表达式画出的逻辑电路如图( )所示(只填写序号);将表达式转换为“与非-与非”式F=( )(书写时注意一个与项中字母按照字母表的...
【单选题】.如果短期燃油修正显示的是低于0%的负值,则表明( )。
【单选题】According to the text, what is the major cause of the flooding spam?
A.
Companies rely on e-mail for communications.
B.
More people in the world communicate by e-mail.
C.
Many computer viruses contain spam e-mail.
D.
More advertisers begin to promote sales through spam.
【单选题】与聚乙烯的制造工艺类似,将四氟乙烯进行加聚反应而得到一种高分子材料聚四氟乙烯,可用于制造不粘锅,这种材料的性质特别稳定,所以被称为( )
【单选题】抗震等级为三级的框架结构,当采用C30混凝土和HRB400级普通钢筋时,构件中纵向受拉钢筋的labE为( )d
【单选题】Flooding is a major _______, which tends to cause a heavy loss of life.
【单选题】如果短期燃油修正显示的是低于0%的负值,则表明( )。
【单选题】某工程项目招投标过程中,由3个建筑企业组成联合体组成一个联合体共同投标,其中成员甲建筑企业具有房建一级资质,成员乙企业拥有房建二级资质,成员丙企业拥有房建三级资质,则该联合体的房建专业资质应认定为( )。
【单选题】According to the text, what is the major cause of the flooding spam?
A.
Companies rely on e-mails for communications.
B.
More people in the world communicate by e-mails.
C.
Many computer viruses contain spam e-mails.
D.
More advertisers begin to promote sales through spam.