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【单选题】
下列化合物进行催化加氢时,反应活性最小的是( )
A.
Z-2-丁烯
B.
E-2-丁烯
C.
丙烯
D.
乙烯
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参考答案:
举一反三
【单选题】His clothes were not appropriate for such a formal occasion.
A.
formal
B.
casual
C.
obliged
【简答题】PDCCH、PCFICH、PHICH、PDSCH分被按照( )进行资源映射。 A:RB、REG、REG、CCE B: CCE、RE、REG、RB C:CCE、REG、CCE、RB D:CCE、REG、REG、RB
【简答题】His casual clothes were not ___________ for such a formal occasion.
【单选题】若注册表新建“DWORD值”,其类型为( )。
A.
REG_SZ
B.
REG_BINARY
C.
REG_DWORD
D.
REG_MULTT_SZ
【单选题】下列程序: WHILE reg1 < reg2 DO reg1 :=reg1 + 1; ENDWHILE 如果变量( )条件一直成立,则重复执行reg1 加1,直至( )条件不成立 为止。
A.
reg1
B.
reg1 reg2
C.
reg1>reg2 , reg1
D.
reg1>reg2 , reg1>reg2
【简答题】注册表的值项使用的数据类型包括:( )? A.REG_BINARY B.REG_DWORD C.REG_EXPAND_SZ D.REG_BZ
【简答题】重要的胃肠激素主要有_________、_________、_________、_________和_______等。
【单选题】金葡菌对青霉素产生耐药性的主要原因是该菌产生
A.
乙酰化酶
B.
核苷酸化酶
C.
染色体基因突变
D.
β-内酰胺酶
E.
磷酸化酶
【简答题】胃肠激素主要有___________、___________、___________和___________。
【简答题】When we found him, he was a sorry sight. His clothes were torn, his hands bleeding. Before we reached him, we saw him fall. He lay a moment. Then he pulled himself to his feet, walked unsteadily a few...
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