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—Theseaisveryroughtoday.—Yes,I‘veneverseen_______before.A.suchroughseaB.sucharoughseaC.sor
—The sea is very rough today. —Yes, I‘ve never seen _______ before. A. such rough sea B. such a rough sea C. so rough seaD. that rough sea
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—The sea is very rough today. —Yes, I‘ve never seen _______ before. A. such rough sea B. such a rough sea C. so rough seaD. that rough sea
A.孕9周以后胎盘出现,此后正常位置的胎盘在胎儿娩出前部分或全部从子宫壁先期剥离,称胎盘早剥
B.发病早期,出血少时,若胎盘后出血沿胎膜与子宫壁之间流出,超声可表现阴性
C.出血量多,累积于局部,表现为胎盘基底膜与肌层之间无回声区或不均匀回声,胎儿出现胎心变化甚至无胎心
D.胎盘早剥局部出血后自行止血,时间较长时胎盘基底膜与肌层之间可探及不均匀回声团
A.胶层减薄,弹性降低
B.导致印刷压力不均匀
C.影响同步滚压状态
D.加速橡皮布的蠕动和老化
E.促使油墨过度乳化
F.产生重影故障
A.一次性制量不宜过多
B.直接加热会使成分不均匀,而影响流动性
C.直接加热会燃烧
D.直接加热,会使局部过热而影响粘结性能