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参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】Part ADirections: Read the following four texts．Answer the questions below each text by choosing A, B, C or D．(40 points)The long year of food shortage in this country have suddenly given way to appar...
A.
The abundant food supply is not expected to last
B.
Britain is importing less food
C.
Despite the abundance, food prices keep rising
D.
Britain will cut back on its production of food
【单选题】The long year of food shortage in this country have suddenly given way to apparent abundance. Stores and shops are choked with food. Rationing (定量供应 ) is virtually suspended, and overseas suppliers ha...
A.
the fall in world food prices would benefit British food producers
B.
an expansion of food production was at hand
C.
British food producers would receive more government financial support
D.
it looks depressing despite government guarantees
相关题目：
【单选题】两个电阻串联,已知 R1=2R2,U1=4V,则U2为( )
A.
1V
B.
2V
C.
4V
D.
8V
【单选题】不属于串联四极杆线性离子阱质谱独有的扫描方式的是？（）
A.
增强分辨扫描
B.
增强子离子扫描
C.
MS/MS/MS
D.
选择离子扫描
【多选题】公司持有一定量的现金的动机是( )。
A.
交易性需要
B.
投机性需要
C.
预防性需要
D.
购买固定资产
E.
投资需要
【单选题】IGBT的通态可以看成是MOSFET与pin二极管的串联。
A.
正确
B.
错误
【单选题】下列属于多级质谱的是（）。
A.
四级杆质谱
B.
飞行时间质谱
C.
离子阱质谱
D.
磁质谱
【单选题】Part ADirections: Read the following four texts．Answer the questions below each text by choosing A, B, C or D．(40 points)The long year of food shortage in this country have suddenly given way to appar...
A.
The abundant food supply is not expected to last
B.
Britain is importing less food
C.
Despite the abundance, food prices keep rising
D.
Britain will cut back on its production of food
【多选题】质谱检测器类型有()
A.
电子倍增管
B.
渠道式电子倍增器阵列
C.
紫外检测器
D.
火焰光度检测器
【单选题】两个电容器串联,则( )。
A.
q 1 =2q 2
B.
2q 1 =q 2
C.
q 1 =q 2
D.
无法确定
【单选题】串联反应，目的产物P的收率为（ ）。
A.
B.
C.
D.
【多选题】丁基苯在质谱中常出现的特征离子有（）
A.
92
B.
77
C.
65
D.
91
【单选题】液体二次离子质谱为（）
A.
FD-MS
B.
EI-MS
C.
FAB-MS
D.
LSI-MS
E.
ESI-MS
【单选题】The long year of food shortage in this country have suddenly given way to apparent abundance. Stores and shops are choked with food. Rationing (定量供应 ) is virtually suspended, and overseas suppliers ha...
A.
the fall in world food prices would benefit British food producers
B.
an expansion of food production was at hand
C.
British food producers would receive more government financial support
D.
it looks depressing despite government guarantees
【单选题】定量检测AFP不能采用
A.
ELISA
B.
RIA
C.
对流免疫电泳
D.
荧光偏振免疫
E.
电化学发光