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【单选题】
8421 代码的二 —— 十进制加法计数器由四个触发器构成，计数器产生进位信号之前的一个状态是（ ）。A.
1111;
B.
0000;
C.
1001;
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反馈参考答案：
举一反三
【多选题】What does good delivery contain?
A.
A good intonation
B.
A steady rhythm
C.
Facial expressions and body language that match the words
D.
The loudest voice of the speaker
【多选题】下列哪些是并联式混合动力驱动系统的 优点 ?
A.
发动机输出能量的利用率相对较高
B.
当电机仅起功率调峰作用时，电机、发动机的功率可适当减小，电池的 容量也可减小
C.
在繁华的市区低速行驶时，需要有功率足够高大的电机，所需电池的容 量相应也要大
D.
并联驱动系统的传动机构较为复杂
E.
发动机有可能不在其最佳工作区域内运行，其油耗和排放指标可能不如 串联式混合动力系统
【单选题】Which of the following statement is NOT correct about a good delivery?
A.
A good delivery combines a certain degree of formality with the best attributes of good conversation — directness, spontaneity, animation, vocal and facial expressiveness and a lively sense of communication.
B.
A good delivery is informal and resembles casual conversation.
C.
A good delivery should be direct, animated, lively and expressive.
【单选题】Which of the following statement is NOT correct about a good delivery?
A.
A good delivery should be direct, animated, lively and expressive.
B.
A good delivery combines a certain degree of formality with the best attributes of good conversation—directness, spontaneity, animation, vocal and facial expressiveness and a lively sense of communication.
C.
A good delivery is informal and resembles casual conversation.
D.
none of the above
【单选题】Which of the following statement is NOT correct about a good delivery?
A.
A good delivery combines a certain degree of formality with the best attributes of good conversation—directness, spontaneity, animation, vocal and facial expressiveness and a lively sense of communication.
B.
none of the above
C.
A good delivery is informal and resembles casual conversation.
D.
A good delivery should be direct, animated, lively and expressive.
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