移车时必须坚持先打后撤的原则,一次替柱长度不得大于30m。
参考答案:错
Form the sentences. 连词成句。
1. school, he, in, a, new, boy, is
2. not, Steven's, it's, pencil
3. mouth, the pencil, is, in, Danny's
4. he, reading, is, a, book
5. paper, she, is, on, the, drawing
I型糖尿病的发病与________、________、________等多种因素有关。