【单选题】我国把实行计划生育作为长期基本国策,主要原因是 [ ]
【单选题】患者,女,39岁,6个月前因外伤致一上前牙脱落,今要求烤瓷桥修复。口腔检查:右上中切牙缺失,间隙无明显异常,牙槽嵴高度无明显异常,较平整。左上中切牙近中切角缺损,未露髓,探稍敏感,叩诊阴性,无松动。右上侧切牙牙冠完好,叩诊阴性,无松动。上下前牙牙龈轻度红肿,易出血,可见少量菌斑及牙石,余牙未见明显异常。下列哪项关于右上侧切牙金瓷冠牙体预备的要求是正确的()
【单选题】某患者,女,39岁,6个月前因外伤致一上前牙脱落,今要求烤瓷桥修复。口腔检查:右上中切牙缺失,间隙无明显异常,牙槽嵴高度无明显异常,较平整。左上中切牙近中切角缺损,未露髓,探稍敏感,叩诊阴性,无松动。右上侧切牙牙冠完好,叩诊阴性,无松动。上下前牙牙龈轻度红肿,易出血,可见少量菌斑及牙石,余牙未见明显异常。下列哪项关于右上侧切牙金瓷冠牙体预备的要求是正确的()
【单选题】The quality of the above mentioned goods were in conformity ( ) the requirement of the contract No.JBD-089.
【单选题】The protective relay is a sensing device, which ( ) the fault, determines its location.
【简答题】我国把实行计划生育作为基本国策的主要原因是( ) A.人口地区分布不均 B.农村人口比重大 C.城镇人口不断增加 D.人口增长与社会经济和资源环境矛盾突出
【单选题】The protective relay disconnects faulted elements in a power system by ().
A.
determining its location
C.
tripping the proper circuit breakers
【简答题】It can be known that the writer of the 3rd greeting card lives home.
【简答题】With regard to humoral regulation, which
of the following is false ( )A. humoral regulation is not controlled by the
nervous system B. Through chemicals C. The cells that hormones act on are called...