临床用血应当遵照()的原则,()制订用血计划,不得()血液。
参考答案:合理;科学;浪费和滥用
(2013·高考浙江卷)People develop ________ preference for a particular style of learning at ________ early age and these preferences affect learning.
A.a;an
B.a;不填
C.不填;the
D.the;an
男腿肚围(脚型规律)=135.55%脚跖围,男250号(二型半)腿肚围329.39mm。