【单选题】【消耗次数：1】
青春期男性正常睾丸的体积约为
①
1ml
②
2ml
③
3ml
④
4ml
⑤
5ml
参考答案：
复制
纠错
相关题目
【单选题】
从1L 1mol/L NaCl溶液中分别取出100ml、10ml和1 ml,它们的物质的量浓度分别（ ）、（ ）、（ ）mol/L。
①
10 ,1 ,0.1
②
1 ,1 ,1
③
2, 2, 2
④
100,10 ,1
【单选题】
10.0mL 0.10 mol·L-1NaOH与20.0mL0.10 mol·L-1HCl混合，所得溶液的pH值约为
①
1.00
②
1.60
③
7.00
④
9.25
【单选题】
微生物每月监测，<（）CFU/ml真菌总数应<（）CFU/ml大肠杆菌应不得检出
①
110,20
②
120,20
③
100,30
④
100，10
⑤
110,12
随机题目
【单选题】
Can you go to the concert with us this evening?____________
①
No, I already have plans.
②
I’d love to, but I’m busy tonight.
③
No, I really don’t like being with you.
④
I’m ill, so I shouldn’t go out.
【单选题】
Havent seen you for ages. Lets have a dinner together this weekend.____________
①
Yes, of course.
②
Welcome!
③
No, thanks.
④
Great idea!
【单选题】
I was satisfied with her explanation, ______.
①
so my classmates were
②
so were my classmates
③
so my classmates did
④
so did my classmates
【单选题】
A kind teacher always takes a very _______ attitude when correcting students’ mistakes.
①
negative
②
partial
③
potential
④
positive