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【单选题】
溶解脂溶性生物碱的最好溶剂是
A.
乙醚
B.
三氯甲烷
C.
乙醇
D.
甲醇
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参考答案:
举一反三
【单选题】Finding her car stolen, _______.
A.
a policeman was asked to help
B.
the area was searching thoroughly
C.
it was looked for everywhere
D.
she hurried to a policeman for help
【判断题】晶体管能够实现放大的外部条件是发射结和集电结都反偏。
A.
正确
B.
错误
【简答题】Yang Nan, 17, was happy to move to her new home in a northern area of Beijing. She was told that her neighborhood used to be rich farmland planted with vegetables, corn and wheat. But looking at the n...
【简答题】在磁盘上容易导致存储碎片发生的物理文件结构是()。(连续组织方式/链接组织方式/索引组织方式)
【判断题】物理文件的连续组织方式在磁盘上容易导致存储碎片的产生。( )
A.
正确
B.
错误
【单选题】The pregnant woman always sits in the non­smoking area of restaurants to reduce her exposure ________ smoke.
A.
to
B.
with
C.
in
D.
from
【单选题】将60.28修约到个位数的0.5单位,应该是(   )
A.
60.2
B.
60
C.
60.3
D.
60.5
【单选题】下面为不正确的字符串赋值或赋初值方式是 ( )
A.
char*str;str="string";
B.
char str[7]={'s','t','r','i','n','g'};
C.
char str1[10];str1="string";    //str1为常量,代表str1首元素地址
D.
char strl[]="string",str2[ ]="12345678"; strcpy (str2,strl);
【单选题】睾酮主要有下列哪种细胞分泌的( )
A.
精原细胞
B.
精子
C.
睾丸生殖细胞
D.
睾丸支持细胞
E.
睾丸间质细胞
【单选题】Finding her car stolen, ______. [     ]
A.
a policeman was asked to help
B.
the area was searched thoroughly
C.
it was looked for everyone
D.
she hurried to a policeman for help
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