ultramicrotomy (超薄切片技术)
参考答案:
电子书穿透力很弱,须将标本制成40~50nm的超薄切片。方法与步骤:固定;脱水;包埋;切片;染色。
______ well in an interview made him lose the position in that company.
A.Not doing
B.Not to have done
C.Having not done
D.Doing not
我国现行增值税管理实行的是购进扣税法,凭()抵扣。
A.口头阐述
B.暴力
C.书面文件
D.发票