成反比例的两种量在变化过程中,一种量扩大,另一种量缩小,变化方向应该相反;
故选:B.
In 1986, the Chinese government ________ a law stating that by the year 2000 every Chinese child would have nine years of compulsory education.
A.impressed
B.introduced
C.interrupted
D.instructed
氮肥的吸湿性大小顺序是()。
A、NH4NO3>NH4HCO3>尿素>(NH4)2SO4>NH4Cl
B、NH4NO3>NH4HCO3>尿素>NH4Cl>(NH4)2SO4
C、NH4HCO3>NH4NO3>尿素>(NH4)2SO4>NH4Cl
D、NH4HCO3>NH4NO3>尿素>(NH4)2SO4>NH4Cl