车体架起后,必须支好铁马再将转向架推出,落车时,必须先将转向架推到车体下部后,方可()推动转向架时,头和手不得超过轮缘高度。
参考答案:撤除铁马
连词成句 (每题1分,本题5分)
小题1:is water there some bottle in the (.)
小题2: January after comes February (.)
小题3:take to books Let’s the Mr. Sun (.)
小题4:does what she have for supper(?)
小题5:likes he playing doesn’t volleyball like guitar the playing but he (, .)
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步骤1
A.4秒后放开推动活塞的手指B.助手用拇、示两指卡紧皮下环处的输精管,术者卡紧皮肤针孔前方的输精管C.用盛有4ml空气的注射器,接在已穿入的针座上D.回抽无血液后,将活塞推至2ml刻度处E.若穿刺成功,活塞则因内压关系自动退回到原该刻度