题目内容

Replace the underlined part in each of the following sentences with a word or phrase from the box below. Write your answer in the brackets. Make changes or additions where necessary.completion; expertise; overlook; die of; as yet; elusive; for the benefit of; imperative; provide for; in one’s entirety

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Why does the writer say ocean exploration is an imperative? Give at least three reasons from the text.

What are the difficulties of ocean exploration? (Name at least two)

建筑物场地平整是指场地平均厚度在( )cm以内的挖、填、运、找平。

A. ±30
B. ±40
C. ±50
D. ±60

基坑、一般土方的划分正确的说法有()。

A. 底宽小于或等于7m且底长大于3倍底宽的为沟槽
B. 底长大于或等于3倍底宽且底面积等于150m2的为基坑
C. 底宽小于或等于7m且底长小于3倍底宽的为沟槽
D. 底长大于或等于3倍底宽且底面积小于或等于150m2的为基坑

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