题目内容

The way we speak to close friends is often not the same as the way we speak to strangers,

A. formal
B. informal
C. frozen
D. neutral

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"Autumn" and "Fall", two synonyms, are an example of______dialect.

A. social
B. regional
C. gender
D. ethnic

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临床上要求制备含Na+ 142mmol／L，K+ 5mmol／L，Ca2+ 2．5mmol／L，Cl- 152mmol／L的注射液1000 ml，如果用NaCl、KCI和CaCl2.2H2O来配制，各应称取多少克？该注射液的渗透压是多少？