【简答题】伯卤代烷的碱性水解在化学动力学上为 级反应。叔卤代烷的碱性水解反应属于 级反应。
【单选题】在高效液相色谱中,色谱柱的长度一般为( )。
【单选题】有关整数类型说法错误的是( )
A.
byte、short、int、long都属于整数类型,分别占1、2、4、8个字节
B.
占据字节少的整数类型能处理较小的整数,占据字节越多,处理的数据范围就越大
【单选题】The CMR convention is the convention on contract for international carriage of goods by road, according to the CMR,the career is responsible for( ).
A.
any wrongful act of the consignor
B.
inherent vice of the goods
C.
neglect of the Consignor
D.
omissions of carrier’s servants
【判断题】一个完整的微型计算机硬件系统应由CPU、存储器、输入设备和输出设备构成。
【单选题】在高效液相色谱中,色谱柱的长度一般为()。
【单选题】The CMR convention is the convention on contract for International carriage of goods by road, according to CMR, the carrier is not responsible for( ).
A.
neglect of his servants
B.
neglect of the persons whose services he makes use of
C.
neglect of the consignor
D.
omissions of the agents
【简答题】是计算 图1.102所示电路中ab两点间的电阻Rab。