田菁是优良的夏季绿肥,具有耐盐、()、生长迅速、()、()等特性,故为盐土地区改良土壤的优良作物。
参考答案:耐涝;适应性广;抗逆力强
— The earthquake last night was really terrible.
— ______, no people were injured or killed, and they escaped in time.
A.Luckily
B.Hopefully
C.Sadly
D.Unfortunately
按照GB/T510-1983(1991)测定油品凝点时,若油品的凝点低于0℃时,试验前应在外套管底部注入1ml~2ml()。
A.无水乙醇
B.乙醚
C.乙醛
D.丙酮