问题
多项选择题
绞吸式挖泥船进入施工区就位时的安全操作，要求是（）。
A.待船停稳，开始下放钢桩
B.船有一定流速时，下放两根钢桩
C.船有一定流速时，先放桥架再放钢桩
D.如有水流，可先放桥架，船停稳后再下钢桩
E.如有水流，先抛横移锚再下钢桩。
答案
参考答案：A, D
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绞吸式挖泥船进入施工区就位时的安全操作，要求是（）。
A.待船停稳，开始下放钢桩
B.船有一定流速时，下放两根钢桩
C.船有一定流速时，先放桥架再放钢桩
D.如有水流，可先放桥架，船停稳后再下钢桩
E.如有水流，先抛横移锚再下钢桩。
参考答案：A, D
| 选词填空， 从方框中选择合适的单词填入下列句子中，每次只用一次。 | |
2. The boy is very clever. He can _______ the words in ten minutes. 3. Please make a _______ with the word"laugh". 4. You can learn English words by making _______ lists. 5. I have _______ my English. My English is much better now. 6. He can't understand _______ English. 7. Math is _______ for me. 8. I can read Shakespeare in the _______. 9. Steve borrowed his uncle's sports car to _______ his girlfriend. 10. Both sides are trying to find a _______. |