民族区域自治政策是什么时候提出的?() A: 1948/10/23 B: 1947/10/23 C: 1945/10/23 D: 1946/10/23
民族区域自治政策是什么时候提出的?() A: 1948/10/23 B: 1947/10/23 C: 1945/10/23 D: 1946/10/23
【填空题】10:23
【填空题】10:23
【填空题】23/10
【填空题】23/10
-23(10)的补码是()。
-23(10)的补码是()。
1.23∧9×(1/23)∧10=
1.23∧9×(1/23)∧10=
实验室用排水集气法制取氢气。在23<sup>o</sup>C、100.5 kPa下,收集了480.0 mL气体,已知23<sup> o</sup>C 时水的饱和蒸气压为2.81 kPa,试计算氢气的物质的量: A: 1.91´ 10<sup>-2</sup>mol; B: 1.91mol。 C: 1.91´ 10<sup>-1</sup>mol; D: 1.91´ 10<sup>-3</sup>mol
实验室用排水集气法制取氢气。在23<sup>o</sup>C、100.5 kPa下,收集了480.0 mL气体,已知23<sup> o</sup>C 时水的饱和蒸气压为2.81 kPa,试计算氢气的物质的量: A: 1.91´ 10<sup>-2</sup>mol; B: 1.91mol。 C: 1.91´ 10<sup>-1</sup>mol; D: 1.91´ 10<sup>-3</sup>mol
(7)180+(-10); (8)(-23)+9;(9)(-25)+(-7); (10)(-13)+5; (11)(-23)+0; (12)45+(-45).
(7)180+(-10); (8)(-23)+9;(9)(-25)+(-7); (10)(-13)+5; (11)(-23)+0; (12)45+(-45).
Conversation 17.A) At 2 o'clock this afternoon. B) At 3 o'clock this afternoon. C) At 10 o'clock this morning. D) At 10 o'clock tomorrow morning. A: At 2 o'clock this afternoon. B: At 3 o'clock this afternoon. C: At 10 o'clock this morning. D: At 10 o'clock tomorrow morning.
Conversation 17.A) At 2 o'clock this afternoon. B) At 3 o'clock this afternoon. C) At 10 o'clock this morning. D) At 10 o'clock tomorrow morning. A: At 2 o'clock this afternoon. B: At 3 o'clock this afternoon. C: At 10 o'clock this morning. D: At 10 o'clock tomorrow morning.
在下列一组数中,最大数是() A: (10001)2 B: (23)10 C: (23)16 D: (23)8
在下列一组数中,最大数是() A: (10001)2 B: (23)10 C: (23)16 D: (23)8
十进制数23可转换为() A: A27 O B: B10111 B C: C17 H D: D107 O
十进制数23可转换为() A: A27 O B: B10111 B C: C17 H D: D107 O