D1C治疗过程中,监测肝素用量适宜,APTT应延长()
A.0.5倍
B.0.5~1倍
C.1.5~2倍
D.2~3倍
E.以上都不是
参考答案:C
They always lay in a large_____of tinned food in winter in case they are snowed up.
A.provision
B.supply
C.proportion
D.storage