皮皮学,免费搜题
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搜题
【简答题】
长期备用医嘱和临时备用医嘱有何区别?
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举一反三
【单选题】Look! _ _ our new book. [     ]
A.
here's
B.
Here's
C.
Here are
【单选题】以下关于滤过速度的论述,不正确的是D
A.
滤渣层两侧的压力差越大,滤速越大
B.
滤速与滤器的面积成正比
C.
滤速与滤材毛细管半径成正比
D.
滤速与毛细管长度成正比
【判断题】大钩减震弹簧的作用是:钻井时缓冲减震,起钻卸开钻柱丝扣后能使立根自动向上跳起脱离下部母扣。
A.
正确
B.
错误
【单选题】Look, I have ____ new English book. [     ]
A.
/
B.
a
C.
an
【单选题】以下关于滤过速度的论述,不正确的是
A.
滤渣层两侧的压力差越大,滤速越大
B.
滤速与滤器的面积成正比
C.
滤速与滤材毛细管半径成正比
D.
滤速与毛细管长度成正比
E.
滤速与料液粘度成反比
【单选题】Here is the book. First _________ it and then tell me what you think of it.
A.
look for
B.
look through
C.
look up
D.
look after
【单选题】______, this is a nice book. [     ]
A.
Look
B.
Do
C.
See
【单选题】Go to the study. _____________ a book. [     ]
A.
See
B.
Read
C.
Look
【单选题】Look at ____ book. It's broken. [     ]
A.
mine
B.
my
C.
I
【单选题】You'd better ______ her number in the phone book. [     ]
A.
look into
B.
look for
C.
look up
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