一般情况下,晚材率的大小可以作为衡量针叶树材与阔叶树环孔材强度大小的一个重要标志。
参考答案:对
As a typist, the most important aspect of the job is to be able to type quickly and _____.
A.faithfully
B.actually
C.roughly
D.accurately
患者15岁男性,因左上前牙外伤脱位做了复位固定结扎,固定结扎的时间应是
A.3~5天B.1~2周C.3~4周D.2~3个月E.4~6个月