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【单选题】
关于交流电,正确的说法是A.
电流的强弱不变
B.
电流的方向不变
C.
电流的强弱和方向随时间做周期性变化
D.
不好确定
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反馈参考答案：
举一反三
【简答题】Rewrite the following sentences after the model. 按照模板重写句子。 Model: 模板: she did not ask him about it because she felt embarrassed. 变成: She was too embarrassed to ask him about it. By the time I got ho...
【单选题】I was too ______ to ask him for help.
A.
embarrassed
B.
embarrasing
C.
thrilled
D.
thrilling
【多选题】食品原料学是研究食品______、生产流通、______、______、品质检验、______及加工应用规律的一门学科。
A.
原料种类
B.
理化性状
C.
营养卫生
D.
储藏保鲜
【简答题】例句:She did not ask him about it because she felt embarrassed. She was too embarrassed to ask him about it. 仿照例句改写下面句子: 1. By the time I got home, I couldn't do anything active because I was very tired...
【简答题】Rewrite the following sentences after the model. 按照模板重写句子。 Model: 模板: she did not ask him about it because she felt embarrassed. 变成: She was too embarrassed to ask him about it. By the time I got ho...
【单选题】I was too ___ to ask him for help.
A.
embarrassed
B.
embarrassing
C.
thrilled
D.
thrilling
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