【简答题】什么是工序、安装、装夹、工位、工步 ? 工序和工步、安装和装夹的主要区别 是什么 ?
【单选题】关于石油产量,下列说法错误的是
C.
除沙特和伊朗外,2004年中国石油产量分别比阿联酋和科威特的石油产量高
D.
尽管2004年美国石油产量下降,但仍在世界上排为第三大产油国
【简答题】证明:当x>0时,恒有不等式 (1+x)ln(1+x)>arctanx
【简答题】证明下列不等式: 1、当x>0时, 2、当x>0时, 3、当x>0时,
【单选题】Amai ______.
A.
is a documentary filmmaker, who was not personally involved in World War Ⅱ
B.
lost her face in the world's first atomic bombing and is now wearing a new face
C.
cannot forgive and forget those who have done so much harm to her and her country
D.
sees the despair of the bomb-makers and enjoys the price they have paid for what they did
【简答题】设函数f(x)=ax-(a+1)ln(x+1),其中a>0. (1)求f(x)的单调区间; (2)当x>0时,证明不等式: (3)设f(x)的最小值为g(a),证明不等式:-1
【单选题】为门(急)诊癌症疼痛患者开具的麻醉药品控缓释制剂,每张处方不得超过()
【简答题】证明下列不等式:当x≥0时,(1+x)ln(1+x)≥arctanx.