安装吊篮的挑梁时,其挑出的长度要事先计算好,要求挑梁的吊环与吊篮的吊点保持水平。
参考答案:错
巨大卵巢囊肿切除术,术中切除肿瘤时,常发生的情况是()。
A.血压下降
B.心功能不全
C.心律失常
D.肠缺血
E.血栓形成
It would be impossible for him to leave hospital tomorrow if he first aid when the accident happened.
A.hadn’t been given
B.wasn’t be given
C.shouldn’t be given
D.wouldn’t be given