A) Allotropic material N) Interstitialcy
B) Amorphous O) Long-range-order materials
C) Anion P) Monomer
D) Atomic packing factor (APF) Q) Neutrons
E) Cation R) Polymer
F) Coordinationnumber S) Polymorphic material
G) Creep T) Proton
H) Crystalline U) Short-range-ordermaterials
I) Electron affinity V) Smart materials
J) Electronegativity W) Substitutionalsolid solution
K) Engineering materials X) Vacancy
L) Factor ofsafety Y) Van de waals forces
M) Interstitialsolid solution Z) Yield
Choose the BEST TERM to match the definition and translate the selected term into Chinese
(20pts).
A) Atomic packing factor (APF) R) Long-range-order materials
B) Characterization S) Mixture
C) Coordination number T) Modulus of resilience
D) Creep U) Modulusoftoughness
E) Designforassembly V) Neutrons
F) Design for disassembly W) Non-ferrous metals
G) Differential thermal analysis X) Optical microscope
H) Electronmicroscope Y) Proton
I) Electron affinity Z) Short-range-order materials
J) Electronegativity AA) Solution
K) Electrons BB) Spacelattice
L) Ferrousmetals CC) Voidfraction
M) Hardness DD) Toughness
N) Ionizationpotential EE) Unitcell
O) Isotope FF) Valenceelectrons
P) LifeCycleAnalysis GG) X-ray diffraction
Q) LifeCyclelnventory HH) Yield
已知u(t)、i(t)波形如图所示,试填空:
f=______;T=______;ω=______
φu=______;φi=______;
U=______;I=______;
正弦表达式:u=______;i=______;
电压电流相位关系:______;该网络呈______性;
网络复阻抗Z=______;阻抗模:|Z|=______;阻抗角:φ=______。
复阻抗参数:R=______;L(或C)=______;
有功功率:P=______;无功功率:Q=______;
视在功率:S=______;功率因数:cosφ=______。
已知低压锅炉的压力p=1.3MPa,主蒸汽温度t1=300℃,给水温度tgs=105℃。计算该压力下省煤器中水的加热过程的Pr并对计算结果进行分析与讨论,其中已知条件列于下表。
1.3MPa锅炉的省煤器工质特性参数
(℃) | u×10-6 [kg/(m·s)] | cp [kJ/(kg·K)] | λ×10-3 [W/(m·K)] | t (℃) | u×10-6 [kg/(m·s)] | cp [kJ/(kg·K)] | λ×10-3 [W/(kg·K)] |
105 | 268 | 4.221 | 681.2 | 150 | 183 | 4.308 | 682.6 |
110 | 255 | 4.228 | 682.3 | 160 | 170 | 4.336 | 680.4 |
120 | 232 | 4.244 | 683.8 | 170 | 160 | 4.368 | 677.4 |
130 | 213 | 4.262 | 684.3 | 180 | 150 | 4.404 | 673.6 |
140 | 197 | 4.283 | 683.9 | 190 | 142 | 4.447 | 668.8 |
A.错误
B.正确
Choose the BEST TERM to match the definition and translate the selected term into Clunese.
A) Ablation L) Nanocomposites
B) Adhesion M) Nettingindex
C) Cohesion N) Plasticizers
D) Degree ofcrystallinity O) Polymer
E) Dielectric constant P) Polymerization
F) Dielectric strength Q) Sealants
G) Fiberloading R) Semi-crystalline
H) Flameretardants S) Specific strength
I) Glass-transitiontemperature T) Viscoelasticity
J) Hysteresis U) Vulcanization
K) Monomers V) Whisker