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【单选题】
在培养基中使用酵母膏主要是为微生物提供
A.
氮源
B.
能源
C.
碳源
D.
生长因子
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举一反三
【简答题】The man pulled out a gold watch, __________ were made of small diamonds. A, the hands of whom  B, whom the hands of C, which the hands of   D, the hands of which
【判断题】表示X的值大于等于50或者小于等于20的C语言表达式为:X≥50||X≤20。()
A.
正确
B.
错误
【简答题】数学表达式 的 C 语言表达式为 ________ ;数学表达式 -e x 的 C 语言表达式为 ________ 。
【单选题】当弹簧受到的载荷撤销以后,弹簧的长度没有变化,说明弹簧在载荷作用下的变形是
A.
塑性变形
B.
弹性变形
【判断题】“大树”一般指干直径在10厘米以上、高度在4米以上的大乔木。
A.
正确
B.
错误
【单选题】表示 year为闰年的 c语言表达式为( )。
A.
(year%4==0&&year%100?!=0)&&(year%400==0)
B.
(year%4==0&&year%100?!=0)||(year%400==0)
C.
(year%4==0)&&(year%400==0)
D.
(year%4==0)||(year%400==0)
【单选题】The man pulled out a gold watch,_____were made of small diamonds.
A.
the hands of whom
B.
whom the hands of
C.
which the hands of
D.
the hands of which
【单选题】The man pulled out a gold watch, __________ were made of small diamonds. 4.A.the hands of whomB.wh
A.
3.        The man pulled out a gold watch, __________ were made of small diamonds. 4. A.the hands of whom
B.
whom the hands of
C.
which the hands of
D.
the hands of which
【判断题】大树移栽中的“大树”一般指干直径在10厘米以上、高度在4米以上的大乔木。
A.
正确
B.
错误
【单选题】The man pulled out a gold watch, ______ were covered with some small diamonds. [     ]
A.
the hands of them
B.
whose the hands
C.
the hands of which
D.
of which hands
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