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【单选题】
关于消化和吸收的叙述,错误的是A.
食物被加工、分解的过程，属于消化
B.
大分子物质可被吸收入血
C.
小分子物质被转运入血或淋巴液的过程，属于吸收
D.
消化分为机械性消化和化学性消化
E.
消化在先，吸收在后
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反馈参考答案：
举一反三
【多选题】Browse the passage and check ( ✓ ) the tasks which the writer does on a typical day as a first-grade teacher.
A.
Finding lost shoes.
B.
Cleaning up mess that children have made.
C.
Telling jokes.
D.
Inventing crossword puzzles.
E.
Completing a lot of paperwork.
F.
Helping children who have hurt themselves.
G.
Mending broken toys.
【简答题】、 用简单的化学方法区分下列化合物: (A) 1-丁炔 (B) 2-丁炔
【多选题】Check (✓) the tasks which the writer does on a typical day as a first-grade teacher.
A.
finding lost shoes
B.
cleaning up mess that children have made
C.
telling jokes
D.
inventing crossword puzzles
E.
completing a lot of paperwork
F.
helping children who have hurt themselves
G.
mending broken toys
【多选题】下列数列属于( ) ─────────────────────── 按生产计划完成程度分组 (%) 企业数 ─────────────────────── 80─90 15 90─100 30 100─110 ...
A.
品质分配数列
B.
变量分配数列
C.
组距式变量分配数列
D.
等距变量分配数列
E.
次数分配数列
【单选题】If the engine of a survival craft does not start, check to see ______.
A.
that the fuel valve is open
B.
if the air supply systen is open
C.
if the water sprinkler system is open
D.
if the limit switch in on
【多选题】下列数列属于 ─ ─────────────────── 按生产计划完成程度分组(%) 企业数 ────────────────────── 80─90 15 90─100 30 100─110 5 ───────────────────── 合 ...
A.
品质分配数列
B.
分配变量数列
C.
组距式变量分配数列
D.
等距变量分配数列
E.
次数分配数列
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