A ______ is the best or most valuable thing that a person or place has. A: secret jewel B: heart jewel C: head jewel D: crown jewel
A ______ is the best or most valuable thing that a person or place has. A: secret jewel B: heart jewel C: head jewel D: crown jewel
Do not fiddle with objects such as jewel...t your interviewers.
Do not fiddle with objects such as jewel...t your interviewers.
请选出句子What a beautiful jewel!中,最有可能读一声调的单词。
请选出句子What a beautiful jewel!中,最有可能读一声调的单词。
宝石(jewel)指那种经过打磨、抛光等加工后,达到珠宝要求的石料或矿物
宝石(jewel)指那种经过打磨、抛光等加工后,达到珠宝要求的石料或矿物
这个领型的名字是?[img=109x173]1803bb64063efe9.jpg[/img] A: bateau B: sabrina C: jewel D: cowl
这个领型的名字是?[img=109x173]1803bb64063efe9.jpg[/img] A: bateau B: sabrina C: jewel D: cowl
He the house on the corner and said, “That’s where I live. ” A: recognized B: chauffeur C: champagne D: jewel E: portrait F: auto H.pointed to
He the house on the corner and said, “That’s where I live. ” A: recognized B: chauffeur C: champagne D: jewel E: portrait F: auto H.pointed to
求解常微分方程组<img src="http://img1.ph.126.net/B8qMozAYz7oEzmWV3LBSvg==/6597340246519736485.png" />, 应用的语句是? DSolve[{x'[t]+y[t]==Cos[t],y'[t]+x[t]==Sin[t]},{x,y},t]|DSolve[{x'[t]+y[t]==Cos[t],y'[t]+x[t]==Sin[t]},x[t],y[t],t]|DSolve[{x'[t]+y[t]==Cos[t],y'[t]+x[t]==Sin[t]},{x[t],y[t]},t]|DSolve[x'[t]+y[t]=Cos[t],y'[t]+x[t]=Sin[t],{x[t],y[t]},t]
求解常微分方程组<img src="http://img1.ph.126.net/B8qMozAYz7oEzmWV3LBSvg==/6597340246519736485.png" />, 应用的语句是? DSolve[{x'[t]+y[t]==Cos[t],y'[t]+x[t]==Sin[t]},{x,y},t]|DSolve[{x'[t]+y[t]==Cos[t],y'[t]+x[t]==Sin[t]},x[t],y[t],t]|DSolve[{x'[t]+y[t]==Cos[t],y'[t]+x[t]==Sin[t]},{x[t],y[t]},t]|DSolve[x'[t]+y[t]=Cos[t],y'[t]+x[t]=Sin[t],{x[t],y[t]},t]
下述真值表表示的命题是。 Input Output p q r T T T T T T F F T F T T T F F T F T T T F T F T F F T T F F F T
下述真值表表示的命题是。 Input Output p q r T T T T T T F F T F T T T F F T F T T T F T F T F F T T F F F T
图示系统的微分方程为( )[img=808x247]17de73b60010c18.png[/img] A: y''(t)+3y'(t)+2y(t)=4f'(t)+f(t) B: y''(t)+2y'(t)+3y(t)=4f'(t)+f(t) C: 4y'(t)+y(t)=f''(t)+3f'(t)+2f(t) D: y''(t)+3y'(t)+2y(t)=f'(t)+4f(t)
图示系统的微分方程为( )[img=808x247]17de73b60010c18.png[/img] A: y''(t)+3y'(t)+2y(t)=4f'(t)+f(t) B: y''(t)+2y'(t)+3y(t)=4f'(t)+f(t) C: 4y'(t)+y(t)=f''(t)+3f'(t)+2f(t) D: y''(t)+3y'(t)+2y(t)=f'(t)+4f(t)
求微分方程[img=261x61]17da6536c0cca5d.png[/img]的通解; ( ) A: C18*cos(t) - C20*sin(t) - C19*t*cos(t) - C21*t*sin(t) B: C18*cos(t) + C20*sin(t) - C19*t*cos(t) - C21*t*sin(t) C: C18*cos(t) + C20*sin(t) + C19*t*cos(t) + C21*t*sin(t) D: -C18*cos(t) + C20*sin(t) + C19*t*cos(t) + C21*t*sin(t)
求微分方程[img=261x61]17da6536c0cca5d.png[/img]的通解; ( ) A: C18*cos(t) - C20*sin(t) - C19*t*cos(t) - C21*t*sin(t) B: C18*cos(t) + C20*sin(t) - C19*t*cos(t) - C21*t*sin(t) C: C18*cos(t) + C20*sin(t) + C19*t*cos(t) + C21*t*sin(t) D: -C18*cos(t) + C20*sin(t) + C19*t*cos(t) + C21*t*sin(t)