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【多选题】
下行参考信号的作用()
A.
下行信道质量测量
B.
下行信道估计
C.
上行信道质量测量
D.
上行信道估计
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皮皮学刷刷变学霸
举一反三
【多选题】黑龙江省的滑雪资源主要集中在( )
A.
哈尔滨市
B.
伊春市
C.
大兴安岭地区
D.
牡丹江市
E.
黑河市
【简答题】What was she good at? She was good at ______.
【单选题】She is good ______ music.She can be good _____ children in the music club.
A.
at, at
B.
with, with
C.
at, with
D.
with, at
【单选题】设有以下函数:
A.
A
B.
B
C.
C
D.
D
【简答题】Traveling is one of the most important activities and people have been interested in it for many years. Modern traffic develops fast, so traveling to different places has become much easier than befor...
【简答题】氢气是工业生产中非常重要的原料。 I.工业上大量的氢气来源于焦炭与水蒸气在高温下的反应:C(s)+H 2 O(g) H 2 (g) +CO(g)。 在一定温度下,向体积为2L的密闭容器中加入1 mol C和1 mol H 2 O,发生上述反应。 (1)一段时间后,下列物理量不再发生变化时,能表明该反应已达到平衡状态的有___(填序号)。 A.混合气体的密度 B.容器内气体的压强 C.混合气体的总物...
【单选题】He is not good at English, and neither ___ good at French.
A.
she is
B.
she does
C.
is she
D.
does she
【单选题】Believing that good will be _______with good and evil with evil, she did good deeds _____ she went. But to her disappointment, the result was quite the other way around. [     ]
A.
awarded; wherever
B.
rewarded; wherever
C.
awarded; where
D.
rewarded; whenever
【单选题】焦炭的反应后强度用 ( ) 表示
A.
CRI
B.
CSR
C.
CR
D.
LD
【单选题】What does the woman mean?
A.
She is good at Chinese.
B.
She is not good at English.
C.
She is not good at Chinese.
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