给水与污水处理厂试运转单机试车,一般空车试运行不少于()。
A.1h
B.2h
C.3h
D.5h
参考答案:B
TIPSS是在肝内建立一个( )与( )之间的人工分流通道,使部分血流直接分流入( ),从而使( )压力降低。
— How about the price of these computers ?
— They are equal in price to, if not cheaper than, ________ at the other stores.
A.others
B.it
C.that
D.the ones