王师傅做102个零件，经检验100个合格，合格率是100%______．
100102×100%≈98%；
98%＜100%；
故答案为：错误．
Some people are walking _______ the bridge and some boats are going _______ the bridge.
A．across, across
B．over, through
C．through, through
D．through, over
男性，25岁，因车祸致伤急诊人院，检查：呼吸困难，烦躁不安，心率95次/分，血压110/70mmHg，X线检查示右肺压缩20%，其治疗首选
A．吸氧B．保持呼吸道畅通C．镇静止痛D．胸腔穿刺排气E．胸腔闭式引流
