法兰漏油着大火，应立即关该线两头阀门。
参考答案：对
- My parents died when I was very small，and I started to make a living by selling newspapers at the
age of ten.
-I really have much __________ for you.
A．belief
B．pride
C．sympathy
D．strength
正常的血浆渗透压为
A．260～280mmol/LB．270～290mmol/LC．280～300mmol/LD．290～310mmol/LE．300～320mmol/L
