安全阀分哪些类型?
参考答案:
(1)静重式安全阀;(2)杠杆式安全阀;(3)弹簧式安全阀;(4)组合式安全阀。
下列事项中构成企业负债的有( )。
A.购置货物或接受劳务产生的应付账款
B.已经预付的款项
C.接受银行贷款
D.企业正在筹划的未来交易或事项
What was unusual about the Article of Confederation? What was the struggle at the Constitutional Convention? How was the conflict solved?