电动式时间继电器的特点包括()。
A.延时精确度较高
B.价格较低
C.体积和重量较大
D.延时时间调整范围较大
参考答案:A, D
电动式时间继电器的特点包括()。
A.延时精确度较高
B.价格较低
C.体积和重量较大
D.延时时间调整范围较大
参考答案:A, D
完形填空。
Mike is a little boy. He 1 four years old. One day, his mother 2 him to see his grandmother.
His grandmother's home is very far 3 their house. So they go there 4 . There 5 only a few people
on the bus. They all sit on 6 seats. Mike is very happy. He looks 7 the window and talks with his
mother. After a while, Mike starts running on the bus. He runs and runs, " 8 are you always running?
Please sit 9 ," his mother says. "I want to see my grandmother 10 . I want the bus to move faster."
Mike answers.
( )1. A. has | |
( )2. A. takes | |
( )3. A. from | |
( )4. A. by train | |
( )5. A. is | |
( )6. A. they | |
( )7. A. out of | |
( )8. A. What | |
( )9. A. in | |
( )10.A. faster | |
B. have |
B. makes
B. off
B. with a bus
B. have
B. their
B. out
B. How
B. down
B. later
C. lets
C. to
C. by bus
C. are
C. theirs
C. from
C. Why
C. up
C. earlier