大学MOOC 工程高频通信电路基础(西安电子科技大学)1206395808 最新慕课完整章节测试答案
第二部分 谐振功率放大器
谐振功率放大器单元测验
1、单选题:
丙类谐振功率放大器通角q 的范围是( )。
选项:
A: q = 180°
B: 90° < q < 180°
C: q = 90°
D: q < 90°
答案: 【 q < 90°】点我阅读全文
1、单选题:
丙类谐振功率放大器通角q 的范围是( )。
选项:
A: q = 180°
B: 90° < q < 180°
C: q = 90°
D: q < 90°
答案: 【 q < 90°】点我阅读全文
1、单选题:
Study the following dialogue. What function does it play according to the functions of language? — A nice day, isn’t it? — Right! I really enjoy the sunlight. ( )
选项:
A:Performative
B:Interpersonal
C:Emotive
D:Phatic
答案: 【Phatic】点我阅读全文
1、填空题:
当凹槽宽度等于刀具直径时,铣削加工编程工序类型选择( )
答案: 【 平面铣】点我阅读全文
1、单选题:
In academic research, the three major literature sources of the theoretical system don’t include()
选项:
A: the original literature
B: the classical literature
C: the latest literature
D: the excellent literature
答案: 【 the excellent literature】点我阅读全文
1、单选题:
#include <stdio.h>是
选项:
A: 编译预处理指令
B: 语句
C: 函数
D: 程序入口
答案: 【 编译预处理指令】点我阅读全文
1、单选题:
Where should a stamp be placed on the envelope?
选项:
A: On the upper right corner of the envelope
B: On the upper left corner of the envelope
C: On the right of the envelope
D: On the middle of the envelope
答案: 【 On the upper right corner of the envelope】点我阅读全文
1、单选题:
政策评估实质上是一种( )
选项:
A: 价值判断
B: 定量测量
C: 决策模式
D: 意识形态
答案: 【 价值判断】点我阅读全文
1、单选题:
我国对外汉语教学事业真正开始于__________
选项:
A: 1949
B: 1950
C: 1951
D: 1952
答案: 【 1950】点我阅读全文
1、单选题:
You went to the post office yesterday, __________?
选项:
A: do you
B: don’t you
C: did you
D: didn’t you
答案: 【 didn’t you】点我阅读全文