【简答题】______ and ______ are two aspects of one mode of trade by which the inviter sends out an announcement of tender in order to call bidders to bid within the time limit.
【单选题】Which of the following would NOT be a form. of recognition as described in the announcement?
A.
Praising a worker to the CEO.
B.
Different treatment from other employees.
D.
An employee of the Year Award.
【简答题】判断下列各题的真值。(1)若2+2=4,则3+3=6;(2)若2+2=4,则3+3≠6;(3)若2+2≠4,则3+3=6;(4)若2+2≠4,则3+3≠6;(5)2+2=4当且仅当3+3=6;(6)2+2=4当且仅当3+3≠6;(7)2+2≠4当且仅当3+3=6;(8)2+2≠4当且仅当3+3≠6。
【简答题】将下列 命题符号化 , 并给出各命题的 真值 : (1) 若 2 +2 = 4, 则地球是静止不动的 . (2 ) 若 2 +2 = 4, 则地球是运动不止的 . (3) 若地球上没有树木 , 则人类不能生存 . (4) 若地球上没有水 , 则 3 是无理数 .
【简答题】将下列命题符号化,并给出各命题的真值: (1)若2+2=4,则地球是静止不动的。 (2)若2+2=4,则地球是运动不止的。 (3)若地球上没有树木,则人类不能生存。 (4)若地球上没有水,则 是无理数。
【简答题】The measures will be revealed through __________. [A] newspapers [B] TV announcement [C] government's white paper [D] Prime Minister's speech
【判断题】使用百度搜索引擎时,不能使用布尔逻辑检索。
【简答题】判断下列各命题的真值: (1)若2+2=4,则3+3=6; (2)若2+2=4,则3+3≠6; (3)若2+2≠4,则3+3=6; (4)若2+2≠4,则3+3≠6; (5)2+2=4当且仅当3+3=6; (6)2+2=4当且仅当3+3≠6; (7)2+2≠4当且仅当3+3=6; (8)2+2≠4当且仅当3+3≠6.