健康成年男性静息状态下,心输出量约为( )。
A.2~3L/min
B.4~6L/min
C.7~8L/min
D.9~10L/min
E.11~12L/min
参考答案:E
用所给词的适当形式填空。
1. If I (fail) the exam, you wouldn't be so happy.
2. If I (be) there, I would stop him from doing so.
3. If it (be) fine tomorrow, we (go) shopping.
4. He (help) us if he had time.
5. He showed us how (get) to the hall with the ID card.
施工过程中发生变更,而合同中没有适用或类似工程的价格,应( )。
A.由工程师提出适当的变更价格,经发包人批准后执行
B.由承包人提出适当的变更价格,经工程师确认后执行
C.由发包人提出适当的变更价格,经承包人同意后执行
D.由设计人提出适当的变更价格,经发包人通知承包人