(单选题) Fe3+,Al3+对铬黑T有 ( )

(3). (单选题) Perception involves what ______ .( )(本题4.0分) (3).? (单选题) Ann suggests that Mary offer drinks________. (单选题) 4∶3∶2液的张力是 单选题：3、悬架属于汽车底盘的（ ）。 (单选题) 3NF( )规范为4NF (3). (单选题) Before his father’s death, the young man ______. [ 单选题 ]SQ3R 中 3R 的正确顺序是 ________ (3).? (单选题) There is evidence that socialization and recreation hold important health benefits. (3). (单选题) How long has it been since life appeared in the earth?( ) (3).? (单选题) The plane ______ a storm during the flight and frightened all the passengers. 钢水中2[Al]+3[FeO]=（Al2O3）+3[Fe]反应是（）。 (3). (单选题) The word “haze” in paragraph three is closest in meaning to ______.(本题4.0分) (3).? (单选题) What is the use of the technique of skimming when you are doing light reading? （单选题）根据背景资料的描述，对3道涵洞的施工应该采取（ ）组织方式。 (单选题) (单选题)下列说法错误的是 ( ) 脱氧过程中2[Al]+3（FeO）＝（Al2O3）+3[Fe]反应是（） (3). (单选题) According to Howard, garden cities should be built______.(本题2.0分) 单选题：3、一般载货汽车的非独立悬架没有（ ）。 (单选题) 若x=2，y=3，则x & y的值是（ ）。 单选题 (3)以下选项中不属于党支部做好群众工作的措施有()