根据下列汇票记载，可判定记载为（）的汇票为无效汇票。
第1题：
“Pay to ABC CO. or order the sum of one thousand US dollars provided that the goods they supply are up to the standard.”该汇票是仍是有效汇票。
A对
B错
第2题：
如果一张汇票背书为：Pay to the order of B Co On delivery Of B／L No．125 For A Co．，London Signature 它属于（） 背书
第3题：
A.“Pay to M Co.or order the sum of one thousand US dollars.”
B.“Pay to M Co.providing the goods they supply are complied with contract the sum of one thousand US dollars.”
C.“Pay to M Co.out of the proceeds in our No.1 account the sum of one thousand US dollars.”
D.“Pay to M Co or order the sum of one thousand US dollars and charge/debit same to applicant’s account maintained with you.”
第4题：
下列满足无条件支付命令的是（）
第5题：
“Pay to ABC CO. or order the sum of one thousand US dollars provided that the goods they supply are up to the standard.”该汇票是仍是有效汇票。
第6题：
汇票上列示“pay to A one hundred US dollars from our No.12345 account”，这是使用一种特殊资金支付的命令，汇票是无效的。
第7题：
下列哪种写法符合合法汇票对金额的要求（）。
第8题：
下列哪种写法符合合法汇票对金额的要求（）。
APay to the order of A Co.the sum of one thousand US dollars by installments
BPay to the order of A Co.the sum of one thousand US dollars plus interest
CPay to the order of A Co.the sum of one thousand US dollars only
DPay from our N0.2 account to the order of A Co.the sum of one thousand US dollars only converted into GBP
第9题：
A作为汇票的收款人作了如下背书：“pay to the order of X bank for collection”，这是（）背书。
第10题：
下列四种汇票中，注明（）是不可转让的。