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【判断题】
行星架制动,太阳轮输入,齿圈输出时为减速传动的情况。
A.
正确
B.
错误
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举一反三
【多选题】统计报表的特点是
A.
报送方式不同
B.
按统一的报送时间上报
C.
资料口径范围的统一性
D.
自上而下逐级填报
E.
建立在原始记录的基础上,资料可靠
【多选题】统计报表的特点是
A.
统一的报送程序
B.
按统一的报送时间上报
C.
资料口径范围的统一性
D.
自上而下逐级填报
E.
建立在原始记录的基础上,资料可靠
【单选题】Suppose that Sphere X had become unfastened from the floor of the vessel during Trials 1 and 7. During which of these trials would Sphere X more likely have undergone the lesser amount of acceleration...
A.
Trial 1, because the magnitude of the electrical force exerted by Sphere Y on Sphere X was greater in Trial 1 than in Trial 7.
B.
Trial 1, because the magnitude of the electrical force exerted by Sphere Y on Sphere X was less in Trial 1 than in Trial 7.
C.
Trial 7, because the magnitude of the electrical force exerted by Sphere Y on Sphere X was greater in Trial 7 than in Trial 1.
D.
Trial 7, because the magnitude of the electrical force exerted by Sphere Y on Sphere X was less in Trial 7 than in Trial 1.
【单选题】下列各物质的分类,名称(或俗称),化学式(或结构简式)对应错误的是()。
A.
酸式盐碳酸氢铵NH4HCO3
B.
化合物福尔马林HCHO
C.
非电解质干冰CO2
D.
糖类纤维素( C6H10O5)n
【单选题】氦是太阳 中含量较多的元素,其元素符号为 A . H B . He C . N D . O 28. 引起温室效应的主要物质是 A . SO 2 B . CO C . CO 2 D . 可吸入颗粒物 29. 属于氧化物的是 A . O 2 B . H 2 O 2 C . NaCl D . H 2...
A.
31,39,41
B.
27,29,35,42,43
C.
28,30,33,37,40,45
D.
32,34,44,46
【多选题】统计报表的特点是
A.
报送方式不同
B.
按统一的报送时间上报
C.
资料口径范围的统一性
D.
自上而下逐级填报
E.
建立在原始记录的基础上,资料可靠
【简答题】(12分)无机化合物可根据其组成和性质进行分类: (1)上述所示的物质分类方法名称是 。 (2)以Na、K、H、O、S、N中任两种或三种元素组成合适的物质,分别填在下表中②③⑥后面。(各空填写一个化学式即可) 物质类别 酸 碱 盐 氧化物 氢化物 化学式 ① HCl ② ③ ④Ba(OH) 2 ⑤Na 2 CO 3 ⑥ ⑦ CO 2 ⑧ Na 2 O ⑨ NH 3 ⑩H 2 O (3)写出⑦转化为...
【多选题】当前社会主义道德建设的重点是加强( )。
A.
社会公德建设
B.
职业道德建设
C.
家庭美德建设
D.
党风廉政建设
【单选题】Suppose that all 6 genes are transferred from a donorbacterium to a recipient bacterium. Under this condi-tion, which student(s) would argue that Gene A couldbe the last gene transferred?
A.
Student 2 only
B.
Student 4 only
C.
Students 2 and 4 only
D.
Students 3 and 4 only
【单选题】下列化学式与其名称的对应关系正确的是
A.
软脂酸 C 17 H 33 COOH
B.
纯碱 Na 2 CO 3 ·10H 2 O
C.
纤维素[C 6 H 7 O 2 (OH) 3 ] n
D.
丙氨酸 CH 2 (NH 2 )CH 2 COOH
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