下列试验仪器中,()不适用于茶叶水分含量测定。
A. 铝制烘皿
B. 鼓风电热恒温干燥箱
C. 真空干燥箱
D. 千燥器
一阻值为4Ω、感抗为3Ω 的电感线圈接在交流电路中,其功率因数为()。
A. 0.8
B. 0.6
C. 0.5
D. 0.1
某投资人投资3万元认购基金,认购资金在募集期产生的利息为王元,其对应的认购费率为4%,则其净认购金额为()元。
A. 1200
B. 1101.15
C. 31200
D. 28846.15
“The use of a poor quality oil can lead to rapid deterioration of its properties with the
A. the use of a poor quality oil
B. the deterioration of its properties
C. the formation of deposits
D. the reduction in heat transfer ability