皮皮学，免费搜题
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搜题
【单选题】
推铅球动作时,伸肘关节的肱三头肌是( )工作。A.
近固定
B.
远固定
C.
上固定
D.
下固定
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Ulrich suspected somebody had intruded into the woodland because
A.
some animals made some unusual movement.
B.
he was informed of the intrusion in advance.
C.
his foresters detected the trace of the intruder.
D.
there was suffocating quietness in the air.