皮皮学,免费搜题
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搜题
【多选题】
样品前处理常用的分离方法有()
A.
液液萃取法
B.
固液萃取法
C.
透析法
D.
盐析法
E.
结晶法
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举一反三
【单选题】Inform Shanghai coast radio station of the destination of the vessel survivors
A.
Shanghai coast radio station shall be informed of the name of the vessel with survivors
B.
Shanghai coast radio station shall be informed of the call sign of the vessel with survivors
C.
Shanghai coast radio station shall be informed of the destination of the vessel with survivors
D.
Shanghai coast radio station shall be informed of the number of survivors on the vessel
【单选题】熔断器的作用是()。
A.
保护电器
B.
接通、断开电源
C.
变压
D.
控制电流
【单选题】国际足联世界杯每几年举办一次?
A.
1年
B.
2年
C.
3年
D.
4年
【单选题】熔断器的作用是()
A.
切断或接通
B.
电路保护
C.
试灯检查
D.
连接线束
【单选题】Inform Shanghai coast radio station of the name of the vessel survivors
A.
Shanghai coast radio station shall be informed of the name of the vessel with survivors
B.
Shanghai coast radio station shall be informed of the call sign of the vessel with survivors
C.
Shanghai coast radio station shall be informed of the destination of the vessel with survivors
D.
Shanghai coast radio station shall be informed of the number of survivors on the vessel
【单选题】Inform Shanghai coast radio station of the condition of the survivors
A.
Shanghai coast radio station shall be informed of the condition of survivors
B.
Shanghai coast radio station shall be informed of the condition of the vessel in distress
C.
Shanghai coast radio station shall be informed of the number of survivors on vessel
D.
Shanghai coast radio station shall be informed of the destination of the vessel with survivors
【单选题】熔断器的作用是( )
A.
保护电路
B.
接通、断开电源
C.
变压
D.
控制电流
【单选题】Inform Shanghai coast radio station of the number of survivors on the vessel
A.
Shanghai coast radio station shall be informed of the name of the vessel with survivors
B.
Shanghai coast radio station shall be informed of the call sign of the vessel with survivors
C.
Shanghai coast radio station shall be informed of the destination of the vessel with survivors
D.
Shanghai coast radio station shall be informed of the number of survivors on the vessel
【判断题】从车站两端及专用线通道经工作人员手工开包检查后可进入车站区域。
A.
正确
B.
错误
【单选题】国际足联世界杯每几年举办一次?
A.
1年
B.
2年
C.
4年
D.
5年
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