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【单选题】
一般说来,声音的质量越高,则其______。A.
量化级数越低和采样频率越低.
B.
量化级数越高和采样频率越高.
C.
量化级数越低和采样频率越高.
D.
量化级数越高和采样频率越低.
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皮皮学刷刷变学霸
举一反三
【单选题】欲以氧化剂O1滴定还原剂R2,O1+n1e=R1,O2+n2e=R2,设n1=n2=1,要使化学计量点时,反应的完全程度达到99.9%,两个半反应的标准电势的最小差值应为( )V。
A.
0.12
B.
0.18
C.
0.23
D.
0.36
【单选题】欲以氧化剂 O T 滴定还原剂 Rx, O T + n 1 e =R T Ox=Rx- n 2 e ,设 n 1 = n 2 =1 ,要使化学计量点时,反应的完全程度达到 99.9% ,两个半反应的标准电位的最小差值应为
A.
0.177V
B.
0.354V
C.
0.118V
D.
0.236V
【单选题】发动机润滑油冬季用油牌号分别为 0W 、 5W 、 10W 、 15W 、 20W 、 25W ,其中 0W 代表的是( )可用
A.
0 ℃
B.
-10 ℃
C.
-15 ℃
D.
-35 ℃
【简答题】设函数 f(x)= a- 2 x 1+a? 2 x (a∈R) 是定义域上的奇函数，则a=______．
【简答题】设函数 f(x)= |x+1|-|x-2|-a ，若函数f（x）的定义域为R，则实数a的取值范围是______．
【简答题】An inventory system in which the business does not keep a continuous record of the inventory on hand. Instead, at the end of the period, the business makes a physical count of the inventory on hand an...
【多选题】财产物资的盘存制度有( )。The inventory system of property and goods includes ( ) .
A.
收付实现制Cash basis
B.
权责发生制Accrual basis
C.
永续盘存制Perpetual inventory system
D.
实地盘存制Physical inventory system
【单选题】85 Tirrol Co's internal audit department is going to assist with the statutory audit. The chief internal auditor will provide you with documentation on the computerised inventory systems at Tirrol Co....
A.
Whether the work was properly planned, performed, supervised, reviewed and documented
B.
Whether there are any significant threats to the objectivity of the internal auditor
C.
Whether sufficient appropriate evidence was obtained to allow the internal auditors to draw reasonable conclusions
D.
Whether the conclusions reached are appropriate in the circumstances and the reports prepared are consistent with the results of the work done
【简答题】设偶函数f（x）的定义域为R，当x∈[0，+∞）时f（x）是增函数，则f（-2），f（π），f（-3）的大小关系是______．
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