\(\int { { {\tan }^{10}}x { { \sec }^{2}}xdx}\)=( ) A: \(-\frac{1}{11} { { \tan }^{11}}x+C\) B: \(\frac{1}{11} { { \tan }^{11}}x+C\) C: \(\frac{1}{11} { { \cot }^{11}}x+C\) D: \(-\frac{1}{11} { { \cot }^{11}}x+C\)

求函数[img=192x40]17da653862ff7b6.png[/img]的导数； ( ) A: cos(x)/sin(x) - cot(x)*(cot(x)^2 + 1) B: cos(x)/sin(x) C: cot(x)*(cot(x)^2 + 1) D: cos(x)/sin(x) - cot(x)*(cot(x)^2 + 1)+cot(x)

\( \int {\csc x(\csc x - \cot x)dx} = \)( ) A: \( - \cot x - \csc x + C \) B: \( - \cot x + \csc x + C \) C: \( \cot x + \csc x + C \) D: \( \cot x -\csc x + C \)

某双轴轮式汽车，其轴距为L、两侧主销轴线与地面相交点之间的距离B，转向时里、外侧车轮的转角分别为β和α，在车轮为绝对刚体的假设条件下，角α和β的理想关系式应为( )。 A: cotα-cotβ=B/L B: cotβ-cotα=B/L C: cotα/cotβ=B/L D: cotβ= B/L-cotα

铣削直齿刀具端面齿槽时，分度头仰角α的计算公式是（） A: cosα＝tan（360°／z）cotθ B: cosα＝tan（z／360°）cotθ C: cosα＝tan（180°／z）cotθ D: cosα＝tan（90°／z）cotθ

Among the five national radio channels of BBC, ___________is sometimes referred to as “Radio Bloke”. A: Radio 1 B: Radio 2 C: Radio 3 D: Radio 5 Live

函数\( y = \ln \cos x\)的导数为（ ）. A: \(\tan x\) B: \( - \tan x\) C: \(\cot x\) D: \(- \cot x\)

函数\(y = \ln \sin x\)的导数为（ ）. A: \( - \cot x\) B: \(\cot x\) C: \(- \tan x\) D: \(\tan x\)

The word “radar” is an acronym for _______ A: Radio Detecting and Ranging B: Radio Defect and Reach C: Radio Defending and Range D: Radio Detect and Range

<input type="radio" name="radio" id="radio" value="male" />这段代码表示