皮皮学,免费搜题
登录
搜题
【单选题】
分线制、总线制和无线制入侵报警系统,系统报警响应时间不大于( )。
A.
1S
B.
2S
C.
5S
D.
20S
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】-- Whose desk is this? -- It's____.
A.
Sue and Jim's
B.
Sue and Jim
C.
Sue's and Jim's
D.
Sue's and Jim
【判断题】增大等熵指数,循环热效率也增大,因此采用稀燃比采用化学计量比燃烧具有更高的热效率。
A.
正确
B.
错误
【单选题】– Whose is this new desk? --It ’ s _____.
A.
Sue and Jim ’ s
B.
Sue and Jim
C.
Sue ’ s and Jim ’ s
【判断题】增大等熵指数,循环热效率也增大,因此在其他条件相同的情况下,采用稀燃比采用化学计量比燃烧具有更高的热效率。
A.
正确
B.
错误
【单选题】—This pen isn't yours, is it? — ______.
A.
Yes, it's not mine
B.
No, yours is bigger
C.
No, it's my friend's
D.
Yes, mine's a red one
【单选题】-Whose umbrella is this on the desk? -Maybe it's Mary's. She always put____ here.
A.
her
B.
his
C.
hers
D.
yours
【单选题】. 加权算术平均数指数,要成为综合指数的变形,其权数( )
A.
必须用q1 p1
B.
必须用q 0p0
C.
可以用q 0p1
D.
可以用q 1p0
【判断题】正时皮带可按照更换周期和里程更换,无须检查 。
A.
正确
B.
错误
【单选题】Whose desk is this?
A.
Tim's and Jim
B.
Tim's and Jim's
C.
Tim and Jim's
【单选题】This scarf doesn’t cost as____ as that one.
A.
cheaper
B.
much
C.
expensive
D.
more
相关题目: