SBR运转中SV30(%)一般控制在()。 A.15-20 B.20-30 C.30 发布时间:2020-07-02 13:05 │ 来源:www.tikuol.com 题型:单项选择题 问题: SBR运转中SV30(%)一般控制在()。A.15-20B.20-30C.30-40D.50-80
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题型:单项选择题 There is ______"f" and ______"u" in the word "flute". [ ]A. a; an B. an; an C. a; a D. an; a 查看答案
题型:单项选择题 改错。下列每个句子中都有一处错误,请找出并改正。 1. The weather is cool and rain tomorrow. A B C D 2. The girl in a purple dress is fifth. A B C D 3. Yesterday is October 1, National Day. A B C D 4. The wind is blowing the tree leaves. A B C D 5. How is the weather like? A B C D 查看答案