反渗透压力容器最多可以装入（）个膜元件。
A.2
B.6
C.7
D.8
参考答案：D
Tom sounds very much ____in the job, but I’m not sure whether he can manage it.
A．interested
B．interesting
C．interestingly
D．interestedly
计算烧伤面积时，伤员五指并拢时手掌的面积，占全身体表面积的（）
A.9％
B.1％
C.3％
D.6％
E.2％
