输卵管妊娠破裂需要鉴别的是()
A.流产
B.急性阑尾炎
C.卵巢黄体破裂
D.输卵管卵巢脓肿
E.子宫穿孔
参考答案:C
This washing machine is environmentally friendly because it uses _____water and electricity than _ ___models.
A.less; older
B.less; elder
C.fewer; older
D.fewer; elder
管道安装完成后,因防护区不宜进行水压强度试验,因此进行气压强度试验。试验压力为(),保压时间为()。
A.12MPa;5min
B.15MPa;5min
C.12MPa;3min
D.15MPa;3min