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【单选题】
关于同步电压为锯齿波的晶体管触发电路叙述正确的是 ( ) 。A.
产生的触发功率最大
B.
、适用于大容量晶闸管
C.
锯齿波线性度最好
D.
、适用于较小容量晶闸管
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反馈参考答案：
举一反三
【多选题】导游人员在引导旅游者旅行、游览过程中，（ ）可以调整和变更接待计划。
A.
遇有可能危及旅游者人身财产安全的紧急情况时
B.
经征得多数旅游者的同意
C.
经征得领队及部分旅游者的同意
D.
立即报告旅行社
【多选题】导游人员在引导旅游者旅行、游览过程中，()时，可以调整和变更接待计划。
A.
在遇有可能危及旅游者人身安全的紧急情况
B.
经征得多数旅游者的同意
C.
经征得领队及部分旅游者的同意
D.
接到旅行社通知、不管旅游者是否愿意
E.
接到游览景区安全警示时
【简答题】Finding a Balance "With a common-sense approach to food, I satisfy my hunger and don't feel deprived." I was a chubby kid who grew into an overweight . I was constantly teased for being heavier ...
【单选题】— Did you have a good May Day holiday? — _____. I enjoyed myself with my family on the beach. [ ]
A.
I'm afraid not
B.
I'm not sure
C.
Of course
D.
I hope so
【简答题】Translate the following paragraph from Passage B Finding a Balance into Chinese. I was a chubby kid who grew into an overweight . I was constantly teased for being heavier than the other kids, le...
【单选题】听力原文：At the moment there was no course I enjoyed more than composition. The speaker thinks that
A.
writing is his favourite course.
B.
he prefers other courses to composition.
C.
one particular course is better than writing.
D.
he doesn't like any course, least of writing.
【简答题】I enjoyed the art history course (which / that / where) I took last year.
【简答题】Replace the underlined words with the correct form of the words below. 用所给单词的正确形式替换句子中的划线部分。(注意大小写,时态,单复数等词形变化) etiquette exhaustive expletive highbrow informant initially reciprocat...
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