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【单选题】
一台异步电动机,其∞>s>1,此时电动机运行状态是( )。
A.
发电机
B.
电动机
C.
电磁制动
D.
以上状态均不对
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举一反三
【单选题】Which of the following explains the imprest system of operating petty cash?
A.
Weekly expenditure cannot exceed a set amount
B.
The exact amount of expenditure is reimbursed at intervals to maintain a fixed float
C.
All expenditure out of the petty cash must be properly authorised
D.
Regular equal amounts of cash are transferred into petty cash at intervals
【单选题】五行相乘,下列哪种说法是正确的
A.
母气有余而乘其子
B.
子气有余而乘其母
C.
气有余则制己所胜
D.
气有余则乘己所不胜
E.
气不及则己所胜侮而乘之
【简答题】写出 5W2H分别是什么?
【单选题】下列关于抗生素的使用原则中哪项是不正确的
A.
选用药源充足的
B.
选用价格较便宜的
C.
能窄谱的有效,不选用广谱的
D.
选用副作用小的
E.
能联合用药,不单用
【单选题】Which of the following best explains the imprest system of petty cash?
A.
Each month an equal amount of cash is transferred into petty cash
B.
The exact amount of petty cash expenditure is reimbursed at intervals to maintain a fixed float
C.
Petty cash must be kept under lock and key
D.
The petty cash total must never fall below the imprest amount
【简答题】某研究小组对用H 2 O 2 分解生成H 2 O和O 2 的实验条件进行探究.他们进行了以下实验: ①往盛有5mL 5% H 2 O 2 溶液的试管中,伸入带火星的木条,木条不复燃. ②往盛有5mL w% H 2 O 2 溶液的试管中,加入a g MnO 2 ,伸入带火星的木条,木条复燃. ③往盛有5mL w% H 2 O 2 溶液的试管中,加入a g Fe 2 O 3 ,伸入带火星的木条,木条复...
【判断题】通常使用 a[i][j] 表示二维数组 a 的任意元素,当指定 i 、 j 为特定值时, a[i][j] 则为数组的一个特定元素。
A.
正确
B.
错误
【单选题】关于恶性溃疡下列正确的是
A.
溃疡形状不规则,一般较小
B.
底部平坦,有黄白苔
C.
周围皱襞规则
D.
边缘呈结节状隆起
E.
胃壁僵硬,蠕动快
【简答题】某研究小组对用H 2 O 2 分解生成H 2 O和O 2 的实验条件进行探究.他们进行了以下实验: ①往盛有5mL 5% H 2 O 2 溶液的试管中,伸入带火星的木条,木条不复燃. ②往盛有5mL w% H 2 O 2 溶液的试管中,加入a g MnO 2 ,伸入带火星的木条,木条复燃. ③往盛有5mL w% H 2 O 2 溶液的试管中,加入a g Fe 2 O 3 ,伸入带火星的木条,木条复...
【单选题】Which one of the following statements about an imprest system of petty cash is correct?
A.
An imprest system for petty cash controls small cash expenditures because a fixed amount is paid into petty cash at the beginning of each period,
B.
The imprest system provides a control over petty cash spending because the amount of cash held in petty cash at any time must be equal to the value of the petty cash vouchers for the period.
C.
An imprest system for petty cash can operate without the need for petty cash vouchers or receipts for spending.
D.
An imprest system for petty cash helps with management of small cash expenditures and reduces the risk of fraud.
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