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【单选题】
直流电路中某支路电流和电压为非关联参考方向,电流在其参考方向下的代数度量值为3A、电压在其参考方向下的代数度量值为5V,则下列选项正确的是()。A.
该支路吸收功率，大小为15W。
B.
该支路发出功率，大小为15W。
C.
可以确定该支路的功率绝对值大小为15W，但无法确定支路是吸收15W还是发出15W。
D.
该支路的功率无法确定。
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举一反三
【单选题】有一染色体 a b c.d e f g 发生了结构变异而成为 a b f e d . c g ，这种结构变异称为（）。
A.
臂间倒位
B.
臂内倒位
C.
易位
D.
缺失
【多选题】What are the government's solutions to these housing problems?
A.
Local council provide free housing to those who are unable to buy their own homes.
B.
Local council provide council housing to those who are unable to buy their own homes.
C.
Tenants can buy their council homes at a discount of up to 60 per cent of the market price.
D.
Tenants can buy their council homes at the same price as that of the market price.
E.
For most people with low incomes and low savings, there are housing benefits to pay for rented accommodation.
F.
For most people with low incomes and low savings, there is barely any housing benefits to pay for rented accommodation.
【单选题】When solutions of strong electrolytes in water are formed, the ions are surrounded by water molecules. These interactions are best described as a case of __________.
A.
hydration
B.
supersaturation
C.
crystallization
D.
dehydration
E.
solvation
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