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【单选题】
将细胞分裂素类物质配制成 0.5-1mg/ml 的母液时,可先用少量的() 溶解,再定容到所需的体积。A.
95%酒精
B.
85% 酒精
C.
95% 酒精
D.
0.1% 升汞
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【单选题】Helen had left her key in the office so she had to wait until her colleagues_______ .
A.
comes back
B.
come back
C.
came back
D.
would come back
【简答题】企业对于已经发出但尚未确认销售收入的商品成本，应借记的会计科目是（ ）。
【单选题】Helen ______ her key in the office so she had to wait until her colleagues ______.
A.
has left; comes back
B.
left; had come back
C.
had left; came back
D.
had left; would come back
【单选题】下列对联涉及的人物是 ( ) (1) 酌酒花间 , 磨针石上 ; 倚剑天外 , 挂弓扶桑。 ( 2 ) 枫叶四弦秋 , 枨触天涯迁谪恨 ; 浔阳千尺水 , 勾留江上别离情。 (3) 萃父子兄弟于一门 , 八家唐宋占三席 ; 悟骈散诗词之特征 , 千变纵横识其源。
A.
李白 白居易 苏洵 苏轼 苏辙
B.
李清照 李白 韩愈 柳宗元 欧阳修
C.
杜甫 白居易 辛弃疾 李煜 苏轼
D.
白居易 柳永 苏洵 苏轼 苏辙
【简答题】ProQuest 系列数据库有()检索、()检索和()检索。
【单选题】Helen ___her keys in the office so she had to wait until her husband ___home. A. has left; comes B. left; had come C. had left; came D. had left; would come
A.
has left; comes
B.
left; had come
C.
had left; came
D.
had left; would come
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