【单选题】13 Which of the following correctly describes the imprest system for operating petty cash? A A All expenditure out of petty cash must be supported by a properly authorised voucher.
B.
A regular equal amount of cash is transferred into petty cash.
C.
The exact amount of expenditure out of petty cash is reimbursed at intervals.
D.
A budget is fixed for a period which petty cash expenditure must not exceed.
【简答题】(15分)有机物W~H有如下的转化关系。已知W、B为芳香族化合物,X为卤素原子,W、A、B均能与NaHCO 3 溶液反应,A分子中有2个甲基,H分子中含有醛基和苯环且H分子苯环上的一氯取代物只有两种 。请回答下列有关问题: 请回答下列有关问题: (1)反应①、②分别属于 反应、 反应(填有机反应类型),A、B中均含有的含氧官能团的名称是 。 (2)F的化学式 ,B的结构简式 。 (3)反应②的化学...
【单选题】数据库系统中,物理数据独立性是指
C.
应用程序与存储在磁盘上数据库的物理模式是相互独立的
【单选题】Expenses paid through petty cash are recorded in the accounting records:
A.
When the petty cash fund is initially established.
B.
On the date the petty cash funds are disbursed.
C.
When the petty cash fund is replenished.
D.
Only at the end of the accounting periods.
【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】出生3天后起病的新生儿败血症常见的致病菌是
【简答题】有机物W~H有如下的转化关系。已知W、B为芳香族化合物,X为卤素原子,W、A、B均能与NaHCO 3 溶液反应,A分子中有2个甲基,H分子中含有醛基且苯环请回答下列有关问题: 请回答下列有关问题: (1)反应①、②分别属于 反应、 反应(填有机反应类型), A、B中均含有的含氧官能团的名称是 。 (2)F的化学式 ,B的结构简式 。 (3)反应②的化学方程式是 。 (4)若 反应④的化学方程式是 ...
【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】When a petty cash fund is in use:
A.
Petty cash is debited only when the fund is replenished.
B.
The general bank account is debited only when this fund is established.
C.
Small payments are made out of cash receipts before they are deposited.
D.
Expenses paid from the fund are recorded when the fund is replenished.