皮皮学，免费搜题
登录
搜题
【单选题】
下列物质中对骨髓所有造血细胞的增殖、分化都有调控作用的是A.
IL-2
B.
IL-3
C.
IL-4
D.
IL-5
E.
G-CSF
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】五色环电阻的各条色环颜色分别为：橙绿红黑金，请问这个电阻的阻值为
【单选题】Guest: ______.Clerk: Certainly. Do you have a reservation? Guest: Yes. The name is Morales. Mr. and Mrs. Morales. Clerk: Here we are. For five nights. Could you fill in the registration card, please? ...
A.
I'd like rest here, please
B.
I'd like to rent a room, please
C.
I'd like to check in, please
D.
I'd like to stay in, please
【简答题】A.Wife and husband. B.Teacher and student. C.Clerk and guest. D.Employer and employee.
【单选题】What are the two speakers?
A.
Manager and clerk.
B.
Clerk and guest.
C.
Wife and husband.
【单选题】Clerk: Please fill out the form. Guest: All right. , please? Clerk: It's August, the thirteenth.
A.
What day is it today
B.
What's the number
C.
What's the date today
D.
What's the time now
相关题目：