一个物体从某一高处以初速度v0水平抛出,它落地时的速度为大小为v,方向和水平地面

题型:填空题

问题:

一个物体从某一高处以初速度v0水平抛出,它落地时的速度为大小为v,方向和水平地面成θ角,那么sinθ=________;它运动的时间为________。

考点:平抛运动
题型:填空题

Directions:

Once you were ill and were hospitalized for a few weeks in the Chaoyang Medical Center, City of Tai Yuan, Shanxi Province. During your stay the entire staff were kind to you. Write a letter to

1) tell about your stay in the hospital and

2) extend your gratitude to the hospital staff.

You should write about 100 words on ANSWER SHEET 2. Do not sign your own name at the end of the letter. Use "Li Ming" instead. You don’t have to write the address.

题型:填空题

某分部工程有两个施工过程,各分为4个施工段组织流水施工,流水节拍分别为3天、4天、3天、3天和2天、5天、4天、3天,则流水步距和流水施工工期分别为( )天。

A.3和16

B.3和17

C.5和18

D.5和19

题型:填空题

()和()是韭菜的两个重要特性。

题型:填空题

1969年8月13日,苏联在中苏边界西段、中国新疆裕民县的()争议地区对中国军队采取报复行为。

题型:填空题

孟子散文的一般特点是()。

A.善用“欲擒故纵,引君入彀”的论辩手法

B.善用比喻

C.运用排偶句说理

D.富有气势

E.迂徐委婉

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