皮皮学,免费搜题
登录
搜题
【单选题】
---- Tim was seriously hurt in the match and sent to hospital. ---- _____, let’s go and see him.
A.
If so
B.
If not
C.
If necessary
D.
If any
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
【单选题】在电商平台数据库中的商品表设计时,“商品名”字段最好选择()类型 。
A.
text
B.
char(n)
C.
varchar(n)
D.
nvarchar(n)
【单选题】----You didn’t wait for Mr. Smith last night, did you? ---- Yes, but we _______. He didn’t return home at all.
A.
needn’t have
B.
should have
C.
didn’t need to
D.
don’t have to
【判断题】发动机由许多机构和系统组成,它们协同完成吸气、压缩、做功、排气过程,实现电能转化为机械能的有效转换。
A.
正确
B.
错误
【单选题】力在坐标轴上的投影是
A.
矢量
B.
代数量
C.
张量
D.
以上皆是
【判断题】血液中不易查出的乙肝病毒抗原是 HBeAg.
A.
正确
B.
错误
【多选题】P Ù Q 的常见的等价表示有( )。
A.
Kpq
B.
P&Q
C.
P × Q
D.
PQ
【单选题】—You didn't wait for Mr. Smith last night, did you? —Yes, but we ________. He didn't return home at all.
A.
don't have to
B.
needn't have
C.
didn't need to
D.
should have
【判断题】血液中不易查出的乙肝病毒抗原是HBcAg。()
A.
正确
B.
错误
【单选题】—You didn’t wait for Mr. Black last night, did you? —No, but we ____. He didn’t return home at all.
A.
couldn’t have
B.
needn’t have
C.
didn’t need to
D.
should wait have
【判断题】血液中不易查出的乙肝病毒抗原是HBcAg.
A.
正确
B.
错误
相关题目: