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【单选题】
Choose the best sentence or phrase from the list A~F. (There is one extra item.) For gaps 1~5, mark one letter (A~F) to fill each of the gaps. Do not mark any letter twice. Packaging of commodities is generally divided into transport packing (also called outer packing) and sales packing (also called inner packing). The third kind of packaging, neutral packing is also often used in international trade. Transport packaging is mainly to keep the goods safe and sound during transportation. It must not only be solid enough to 4.___________, but also be pilferage-proof, easy to store, convenient to load and unload.A.
prevent the packaged goods from any damage
B.
some special cases and with unique packages
C.
serve several primary functions
D.
get the contents into a nice, compact shape
E.
its choice of color, design, shape and texture
F.
various forms and with different materials
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举一反三
【单选题】关于羊水，下列哪项正确
A.
胎儿尿液是妊娠早期羊水的主要来源
B.
妊娠中期以后主要由母体血清经胎膜进入羊膜腔的透析液
C.
胎儿的消化道是吸收羊水的主要途径
D.
脐带不能吸收羊水
E.
羊水呈弱酸性
【简答题】下列白细胞中,吞噬能力最强的是
【单选题】关于羊水，下列哪项正确
A.
在羊膜腔内静止不动
B.
羊水呈弱酸性，内含大量上皮细胞及胎儿代谢产物
C.
妊娠40周时羊水量最多
D.
胎儿的消化道是吸收羊水的主要途径
E.
胎儿尿液是孕早期羊水的主要来源
【多选题】在SELECT语句中用来指定所选记录必须满足的条件时应使用( )子句,用来说明每个组需要的条件时应使用( )子句,在使用having子句前,应保证select语句中已经使用了( )子句。
A.
where
B.
having
C.
group by
D.
order by
【单选题】关于羊水,下列哪项正确:
A.
妊娠 11~14 周起胎儿尿液是羊水的重要来源
B.
羊水的吸收约 2 / 3 由胎膜完成
C.
足月胎儿每日吞咽羊水约 800 ml
D.
足月妊娠羊水应为无色澄清液体
E.
羊水中酶含量较母血清中少
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