—My wife came first in the Chinese speec

题型:选择题

问题:

—My wife came first in the Chinese speech contest.

—Did she?______!

A.Cheer up

B.Good luck

C.Best wishes

D.Congratulations

考点:情景交际
题型:选择题

依法公开招标的工程,应本着()的原则,依据《建设工程工程量清单计价规范》GB50500-2013的规定编制清单或计价。

A.严格

B.准确

C.科学

D.合理

E.全面

题型:选择题

—Once a neighbour accused me ________ playing my radio too loudly .

 —Oh, you had the right to defend yourself ______ the charge.

A.of; against

B.for; of

C.against; for

D.for; against

题型:选择题

如图所示,细绳AC、BC在结点C的下方吊一个重为100N的物体而处于静止状态。

(1)AC、BC细绳所受的拉力分别为多大?

(2)如果两细绳能承受的最大拉力均为120N,要保持细绳不断,则C点所挂的重物的最大重力为多大?

题型:选择题

光敏电阻的亮电流是()和()之和。

题型:选择题

气动中的不同压力单位的换算为()

A.1bar=14.5psi

B.1bar=45psi

C.1bar=29psi

D.1bar=100psi

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