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【判断题】
PLC 控制程序下载时不能断电。
A.
正确
B.
错误
拍照语音搜题,微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【单选题】黄酮苷和黄酮苷元一般均能溶解的溶剂为
A.
乙醚
B.
乙醇
C.
氯仿
D.
E.
酸水
【单选题】黄酮苷和黄酮苷元一般均能溶解的溶剂为
A.
乙醚
B.
氯仿
C.
乙醇
D.
E.
酸水
【单选题】黄酮苷和黄酮苷元一般均能溶解的溶剂为
A.
氯仿
B.
乙醇
C.
D.
酸水
【单选题】黄酮苷和黄酮苷元一般均能溶解的溶剂为
A.
乙醚
B.
乙醇
C.
D.
酸水
E.
氯仿
【单选题】Jack would rather his younger sister ______ in the same hospital as he does.
A.
worked
B.
works
C.
to work
D.
work
【单选题】Jackie doesn't tell Amy why she and Dean are going to celebrate because ______ .
A.
she doesn’t know the reason
B.
the reason isn’t really important to her
C.
she doesn’t want anyone else to know the reason
【单选题】黄酮苷和苷元一般均能溶解的溶剂为 ( )
A.
乙酸乙酯
B.
甲醇
C.
酸水
D.
乙醚
E.
【单选题】A:What a good trip we have today! B:Really? I don’t think so. Q: What does Amy think of the trip?
A.
She likes it very much.
B.
She thinks that it’s very helpful
C.
She doesn’t like it at all.
D.
She doesn’t know.
【单选题】黄酮苷和黄酮苷元一般均能溶解的溶剂为
A.
乙醚
B.
乙醇
C.
酸水
D.
【单选题】黄酮苷和苷元一般均能溶解的溶剂为
A.
乙酸乙酯
B.
酸水
C.
乙醇
D.
E.
乙醚
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