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问题
单项选择题
含草酸钙方晶的药材为()。
A.牛膝
B.巴戟天
C.白芍
D.苦参
E.防己
答案
参考答案:
D
补全对话,情景问答
给问句选出相应的答语。
( ) 1. What are you doing?
( ) 2. What's the matter?
( ) 3. What's the forecast?
( ) 4. Does he need an English book?
( ) 5. Can I help you?
A. I can't find my teddy bear!
B. Yes, please.
C. I am packing my suitcase.
D. It's rainy and cool.
E. No, he doesn't.
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多项选择题
下列属于按控制方式给高压接触器分类的是()。
A.电磁式
B.机械锁扣
C.气动式
D.无锁扣
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