【判断题】乘数与边际消费倾向成反比,与边际储蓄倾向和边际进口倾向成正比。
【单选题】关于嗜肺军团菌特征叙述,错误的是:
B.
专性需氧,在2.5%~5% CO2气体条件下生长良好
C.
分离常用培养基为缓中液活性炭酵母浸液琼脂(BCYE)
【单选题】A: Could you spare a few hours to help me clean the house? B: ______.
A.
No, the house is clean.
B.
Nobody could help you.
C.
No, you should rely on yourself.
D.
I'm really busy with school these days. How does this Saturday sound?
【单选题】从脑脊液中分离培养,能在血平板上生长的细菌最可能是
【判断题】如目镜、物镜分别标着 “10× 、 16×” ;那么图像将被放大 160 倍。
【单选题】There are many folk cultures on the island, which are_____distinct from the mainland.