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【单选题】
分娩是指A.
宫缩时胎头露出阴道口,宫缩间歇时又缩回
B.
宫缩持续或间歇时胎头始终暴露于阴道口,不再回缩
C.
妊娠满28以后的胎儿及其附属物,从临产发动至从母体全部娩出的过程
D.
胎头进入骨盆入口平面,颅骨最低点接近或达到坐骨棘水平
E.
胎儿先露部随着骨盆各平面的不同形态,被动地进行一系列的适应性转动,以其最小径线通过产道的全过程
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反馈参考答案：
举一反三
【单选题】发生重度颠簸，乘务员的处置程序错误的一项是
A.
马上返回座位做好，系好安全带
B.
立即广播，让旅客坐好
C.
洗手间按的旅客也需要另外提醒
D.
洗手间的旅客不得返回座位
【单选题】How many grams of gold are there in 2.65 moles of Au?
A.
5.22 ×10 2 g
B.
5.22 ×10 3 g
C.
5.22 ×10 4 g
D.
5.22 ×10 5 g
【简答题】The acting direction of static pressure is always in the direction of the acting suce
【简答题】The definition about static pressure is
【单选题】The static pressure and density of the airstream behind the expansion wave are ________.
A.
increased
B.
decreased
【单选题】The static pressure and density of the airstream behind the shock wave are greatly ________.
A.
increased
B.
decreased
【单选题】Oil pressure in the lubrication system is _____ the static sea water head to ensure that sea water _____ the stem-tube.
A.
lower than / can lubricate
B.
lower than / can cool
C.
higher than / can enter
D.
higher than / cannot enter
【简答题】How many grams of porridge does he use each morning?
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