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【单选题】
用20mL的移液管移出的溶液体积应记为( )
A.
20ml
B.
20.00ml
C.
20.0ml
D.
20.000ml
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【简答题】用十进制加法计数器芯片74LS160构成如图所示电路,则其模值为 。
【单选题】It's cold today, so I'm wearing ____.
A.
sandals
B.
shorts
C.
a sweatshirt
【单选题】It's cold today, so I'm wearing ________.
A.
a jacket
B.
makeup
C.
/
D.
/
【简答题】用十进制加法计数器芯片74LS160构成如图所示电路,则其模值为 。【图片】
【单选题】中药饮片包装材料不能选用( )。
A.
牛皮纸
B.
食品用精制无纺布
C.
塑料薄膜
D.
塑料编织袋
E.
铁盒
【单选题】It's very cold today so you should ___ your coat.
A.
put on
B.
take off
C.
put up
D.
take over
【单选题】Choose the best word to complete each sentence. 1. It's cold today, so I'm wearing ____.
A.
sandals
B.
shorts
C.
a sweatshirt
【单选题】— It's so cold today. — Yes, it's colder than it was yesterday.
A.
some
B.
more
C.
very
D.
much
【单选题】中药饮片包装材料不能选用( )。
A.
牛皮纸
B.
食品用精制无纺布
C.
塑料薄膜
D.
塑料编织袋
【单选题】Choose the best answer to complete each sentence. 1. It's cold today, so I'm wearing ________.
A.
sandals
B.
shorts
C.
a sweatshirt