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【简答题】
交感神经兴奋时，可使心跳______、皮肤血管______、支气管平滑肌______、瞳孔______、肾上腺髓质______、胃肠道活动______等反应。
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反馈参考答案：
举一反三
【单选题】What does the passage say about the oral tradition in Chicano culture?
A.
It is very important.
B.
It is no longer relevant.
C.
It is being replaced by the written word.
D.
It is primarily rural.
【单选题】It is often said that _____ teachers have _____ very simple life .
A.
/ , /
B.
/ , a
C.
the , /
D.
the , a
【单选题】. So before I go any further I want to thank you very much for inviting me to __________ this important conference.
A.
participate in
B.
join to
C.
take part
D.
attend to
【单选题】I Believe I Can Fly is a nice song by R. Kelly. This song tells us that believing in is very important.
A.
themselves
B.
ourselves
C.
itself
【单选题】在自然界中只有由多种食物构成的膳食，营养素才会种类齐全、数量充足、且( )，才利于人体吸收利用，被称为平衡膳食。
A.
价格偏高
B.
比例适宜
C.
口味多样
D.
有一定的糖分
【单选题】下列型号的低压电器元件中,属于低压配电电器的是( )。
A.
LX19和 DZ5
B.
JR16和 RL1-60
C.
DZ5和 RL1-60
D.
RL1-60和 CJ10
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