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【单选题】
S7-300有四种寻址方式,分别是立即寻址、存储器直接寻址、存储器间接寻址和 。A.
物理寻址
B.
累加器寻址
C.
计数器寻址
D.
寄存器间接寻址
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举一反三
【单选题】This week marks the 10th anniversary of the Alar apple scare, in which many American consumers were driven into a panic following the release of a report by an environmental organization claiming that...
A.
scientists warned that apples were dangerous
B.
many school children became iii after eating apples
C.
it was reported that apples were harmful to health
D.
apples were discovered to have too much pesticide
【单选题】Which apple began the wisdom of human beings? ( )
A.
The apple of Adam and Eve
B.
The apple of Newton
C.
The apple Steve Jobs
【简答题】Tanya German very well.
【单选题】--You do a very good job in German translation! --Thanks. I ______ German in Zhejiang University for four years!
A.
was studying
B.
study
C.
studied
D.
had studied
【单选题】This week marks the 10th anniversary of the Alar apple scare, in which many American consumers were driven into a panic following the release of a report by an environmental organization claiming that...
A.
scientists warned that apples were dangerous
B.
many school children became ill after eating apples
C.
it was reported that apples were harmful to health
D.
apples were discovered to have too much pesticide
【单选题】用水平力 把物体压在竖直墙壁上静止不动,设物体受墙的压力为 ,摩擦力为 ,则当水平力 增大时,下列说法中正确的是:
A.
增大, 增大
B.
增大, 不变
C.
增大, 减小
D.
条件不足,不能确定
【单选题】因特网是一个庞大的计算机网络，每一台入网的计算机一般都分配有一个IP地址。下面关于IP地址的叙述中，正确的是______。 ①72.259.5.0可以作为一个IP地址 ②每一台上网计算机的IP地址都是惟一的 ③一台机器的IP地址可以用它的主机名代替 ④IP地址由类型号、网络号、主机号3个部分组成
A.
①②④正确
B.
②③④正确
C.
只有②④正确
D.
都正确
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