(判断题)29: 若f(x)=x*e^x,则f"(0)=2。 A: 对 B: 错 ...
(判断题)23: 无穷大量与有界量之和为无穷大量。 A: 对 B: 错 ...
(多选题)17: 下列说法正确的是( )。 A: 两个偶函数之和是偶函数 B: 两个奇函数之和是奇函数 C: 两个偶函数之积是偶函数 D: 两个奇函数之积是偶函数 ...
(多选题)11: 当x→0时,与x等价的无穷小量有( )。 A: sinx B: tanx C: ln(1+x) D: e^x-1 ...
(单选题)5: 下列函数在(0,+∞)上单调减少的是( )。 A: y=x^2 B: y=lnx C: y=1/x D: y=e^x ...
(单选题)24: I ( ) don't understand. Could you say it again? A: still B: yet C: as well ...
(单选题)18: The police arrived quickly, ( ) it was too late. A: but B: and C: so ...
(单选题)12: You can do your shopping ( ) home. A: your way B: on way C: on your way ...
(单选题)6: The meeting ( ) for five hours. No one knows when it will end. A: has lasted B: have lasted C: lasted ...
(单选题)25: He bought two books. ( ) I. A: So was B: So did C: So do ...