问题
单项选择题
在TYJL-Ⅱ型计算机联锁系统驱动单元的驱动信号端和驱动回线(高电位)端测量驱动电源的电压时,应为()V的脉动电压。
A、1~2
B、2~3
C、3~4
D、4~7
答案
参考答案:D
在TYJL-Ⅱ型计算机联锁系统驱动单元的驱动信号端和驱动回线(高电位)端测量驱动电源的电压时,应为()V的脉动电压。
A、1~2
B、2~3
C、3~4
D、4~7
参考答案:D
阅读下面的几则寻物及招领启示,选择正确的选项。 | ||||||
LOST (寻物) AND FOUND (招领)
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1. What color is Tom's notebook? | ||||||
[ ] | ||||||
A. Yellow and white. B. Yellow and blue. C. Black and white. D. Red and white. | ||||||
2. ______ found a black pen and her number is ______. | ||||||
[ ] | ||||||
A. Jerry; 487-2635 B. Mary; 486-5956 C. Lily; 498-2456 D. Tom; 422-9856 | ||||||
3. Please call _______. She found a yellow and white cat. | ||||||
[ ] | ||||||
A. Lisa B. Mary C. Jim D. Jerry | ||||||
4. _______ lost a dictionary and _______ found an English book. | ||||||
[ ] | ||||||
A. Jerry; Jim B. Jim; Jerry C. Lily ; Lisa D. Lily; Jim | ||||||
5. —I lost my ring. —Call _______ at _______. She found a set of keys. | ||||||
[ ] | ||||||
A. Jim; 530-7534 B. Lily; 498-2456 C. Tom; 456-9800 D. Lisa; 422-9856 |