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【单选题】
C51中sbit数据类型正确的是( )。
A.
与bit作用一样
B.
将SFR的位地址定义为位变量
C.
其作用域在RAM的20H-2FH空间
D.
其作用域在程序存储器
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举一反三
【单选题】Rules can be broken if it makes sense, for pragmatic reasons.
A.
H
B.
L
【单选题】瀑布模型本质上是一种()模型
A.
顺序迭代
B.
演化方式
C.
线性顺序
D.
风险分析
【单选题】We couldn't have passed the final examination ______ your help.
A.
but for
B.
without
C.
if it had not been for
D.
All of the above.
【单选题】瀑布模型本质上是一种()模型
A.
线性顺序
B.
演化迭代
C.
增量迭代
D.
及早见产品
【单选题】________ his overdrinking, the accident would not have happened.
A.
If it weren’t for
B.
But for
C.
Not had it been for
D.
Had it not been for
【单选题】瀑布模型本质上是一种( )模型
A.
线性顺序
B.
顺序迭代
C.
线性迭代
D.
能及早见到产品的
【单选题】If it ______ for the fence, he ______ into the river.A. were not; fallenB. had not been; could h
A.
41. If it ______ for the fence, he ______ into the river. A. were not; fallen                                    
B.
had not been; could have fallen C were not; could fall                                    D. had not been; could fall
【单选题】五力分析模型是谁提出来的?
A.
迈克波特
B.
福特
C.
泰勒
D.
法约尔
【单选题】神经胶质细胞的主要功能是
A.
传导神经冲动
B.
支持、营养和保护神经细胞
C.
释放神经递质
D.
合成神经纤维
E.
合成神经末梢
【单选题】It ______ for two days. The roads will be locked if it ______ soon.
A.
snowed, won't stop
B.
has been snowing, doesn't stop
C.
has snowed, won't stop
D.
snow, doesn't stop
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