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【单选题】
请指出下列控制哪种是采用进油管路的压力信号来实现顺序动作回路? ( )
A.
采用行程阀构成的顺序动作回路
B.
采用行程开关构成的顺序动作回路
C.
采用延时继电器构成的顺序动作回路
D.
采用顺序阀构成的顺序动作回路
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参考答案:
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】I shall be surprised if he does this the same way _______ I do .
A.
as
B.
like
C.
which
D.
what
【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】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】Bill’s little brother likes to do the same things _________he does.
A.
for
B.
as
C.
with
D.
to
【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.
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