(单选题)17: I searched for my wallet and it wasn't there. At first, I thought I _______ it at home. Then I remembered _______ it out to pay for the taxi. A: must have left;to take B: may leave;taking C: might leave;to take D: could h...
(单选题)11: Do you know your results?No, I don’t know them ____ . A: already B: since C: before D: yet ...
(单选题)24: Japan lies ( ) the east of China. A: on B: in C: to D: at ...
(单选题)18: Tom insists ( ) his rights. A: to B: on C: up D: of ...
(单选题)7: I got my shoes ( ) sale for half price. A: to B: with C: at D: on ...
(判断题)35: 若函数f(z)=u(x,y)+iv(x,y)在区域D内解析,v(x,y)等于常数,则f(z)在D内恒等于常数. A: 对 B: 错 ...
(判断题)37: 如果z0是f(z)的极点,则f(z)在z0处的极限一定存在且等于无穷大. A: 对 B: 错 ...
(判断题)25: 若z0是f(z)的m阶零点, 则z0是1/f(z)的m阶极点。 A: 对 B: 错 ...
(判断题)35: 若f(z)在区域D内解析,则|f(z)|也在D内解析。 A: 对 B: 错 ...
(判断题)29: 若函数f(z)在区域D内解析且f′(z)=0,则f(z)在D内恒为常数。 A: 对 B: 错 ...