c____________ n. 能力;技能
c____________ n. 能力;技能
c____________ a. 有文化的,有修养的
c____________ a. 有文化的,有修养的
If you reduce your price by 2% again, your price will be c____________ enough.
If you reduce your price by 2% again, your price will be c____________ enough.
请根据提示写出单词,单词首字母已给出。消费;消耗;耗尽;吃完 vt. c____________
请根据提示写出单词,单词首字母已给出。消费;消耗;耗尽;吃完 vt. c____________
若三个事件A、B、C同时满足(1)P(AB)=P(A)P(B) ,(2)P(AC)=P(A)P(C) ,(3)P(BC)=P(B)P(C),则称事件A、B、C____________; 若三个事件A、B、C同时满足(1)P(AB)=P(A)P(B) ,(2)P(AC)=P(A)P(C) ,(3)P(BC)=P(B)P(C),(3)P(ABC)=P(A)P(B)P(C),则称事件A、B、C____________;
若三个事件A、B、C同时满足(1)P(AB)=P(A)P(B) ,(2)P(AC)=P(A)P(C) ,(3)P(BC)=P(B)P(C),则称事件A、B、C____________; 若三个事件A、B、C同时满足(1)P(AB)=P(A)P(B) ,(2)P(AC)=P(A)P(C) ,(3)P(BC)=P(B)P(C),(3)P(ABC)=P(A)P(B)P(C),则称事件A、B、C____________;
What are the top 10 20th century inventions ?Write down the English names of these inventions by the given letter.(观看视频,根据首字母写下视频中提到的十大发明。) 1. m___________ 2. s____________ 3. n____________ 4. v____________ 5. a____________ 6. m____________ 7. c____________ 8. p____________ 9. t____________ 10. I___________
What are the top 10 20th century inventions ?Write down the English names of these inventions by the given letter.(观看视频,根据首字母写下视频中提到的十大发明。) 1. m___________ 2. s____________ 3. n____________ 4. v____________ 5. a____________ 6. m____________ 7. c____________ 8. p____________ 9. t____________ 10. I___________
比较C≡C, C=C, C─C, C=C─C=C的键长次序为: C=C─C=C>C─C> C≡C >C=C|C=C─C=C>C─C>C=C>C≡C|C≡C>C=C>C─C>C=C─C=C|C─C>C=C>C=C─C=C>C≡C|C─C>C=C─C=C>C=C>C≡C
比较C≡C, C=C, C─C, C=C─C=C的键长次序为: C=C─C=C>C─C> C≡C >C=C|C=C─C=C>C─C>C=C>C≡C|C≡C>C=C>C─C>C=C─C=C|C─C>C=C>C=C─C=C>C≡C|C─C>C=C─C=C>C=C>C≡C
下列哪种主链骨架原子排列最能代表两个肽键?() A: Cα—N—Cα—C—Cα—N—Cα—C B: Cα—N—C—C—N—Cα C: C—N—Cα—Cα—C—N D: Cα—C—N—Cα—C—N E: Cα—Cα—C—N—Cα—Cα—C
下列哪种主链骨架原子排列最能代表两个肽键?() A: Cα—N—Cα—C—Cα—N—Cα—C B: Cα—N—C—C—N—Cα C: C—N—Cα—Cα—C—N D: Cα—C—N—Cα—C—N E: Cα—Cα—C—N—Cα—Cα—C
比较C≡C(Ⅰ),C=C(Ⅱ),C─C(Ⅲ),C=C─C=C(Ⅳ)的键长次序为( )。 A: Ⅰ>Ⅱ>Ⅲ>Ⅳ B: Ⅲ>Ⅱ>Ⅳ>Ⅰ C: Ⅲ>Ⅳ>Ⅱ>Ⅰ D: Ⅳ>Ⅲ>Ⅱ>Ⅰ
比较C≡C(Ⅰ),C=C(Ⅱ),C─C(Ⅲ),C=C─C=C(Ⅳ)的键长次序为( )。 A: Ⅰ>Ⅱ>Ⅲ>Ⅳ B: Ⅲ>Ⅱ>Ⅳ>Ⅰ C: Ⅲ>Ⅳ>Ⅱ>Ⅰ D: Ⅳ>Ⅲ>Ⅱ>Ⅰ
不稳定的一类化合物是: C≡C|C-C|C=C|C=C-C=C|C=C=C
不稳定的一类化合物是: C≡C|C-C|C=C|C=C-C=C|C=C=C