在建设项目施工中，施工单位与其他主体产生合同之债的情形有 ()

A、s== "john"

B、s.equals("john")

C、s = "john"

D、s.equals(new String("john"))

A．['Mary', 'John', 'Jack']

B．['Mary', 'Jack', 'John']

C．['Jack', 'John', 'Mary']

D．['Jack', 'Mary', 'John']

A、Might John

B、May John have

C、Could John have

D、Can John

A．{"firstName":"John","lastName":"Doe"}

B．{firstName:"John",lastName:"Doe"}

C．{"firstName":John,"lastName":Doe}

D．{"firstName":"John";"lastName":"Doe"}

A．a.del('John')

B．a.remove('John')

C．a.pop('John')

D．del 'John'

A．"john" + " was " + " here"

B．"john" + 3

C．3 + 5

D．5 + 5.5

E．都会引起运行时错误

下列()汇票的写法是指示性抬头。

A. pay to John Davids or bearer

B. pay to John Davids only

C. pay to John Davids not transferable

D. pay to John Davids