Which of the followings is true according to the principles of the writing of invitation letter（）
An informal invitation letter can be written either in the first person or in the third person
B. Contents of an invitation letter should always include the purpose of the invitation, the place and the time of the event
C. The tone of formal invitation letter tends to be oral, conversational, and friendly
D. In invitation letter, it must be avoided to use the abbreviation form such as “I’m”, “I’ve”, “We’re”, “You’re”, etc
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Which of the following is not concerned with plasma colloid osmotic pressure decrease（）
A. Cirrhosis
B. Severe malnutrition （dystrophy）
C. Anemia
D. Malignant tumor
E. Nephrotic syndrome
The main mechanism of facial edema in patients with nephrotic syndrome is（）
A. Increased capillary hydrostatic pressure
B. Increased capillary permeability
C. Decreased plasma colloid osmotic pressure and loose local tissue structure
D. Obstruction of lung lymphatic return
E. Decreased GFR
The mechanism of edema in the homolateral arm of breast carcinoma treated with radical surgery is（）
A. Increased capillary hydrostatic pressure due to congestion in operation
B. Increased capillary permeability due to vessel impairment in operation
C. Decreased plasma colloid osmotic pressure due to plasma loss in operation
D. Lymphatic obstruction due to removal of lymph nodes in operation
E. Increased tissue colloid osmotic pressure due to tissue damage in operation
Which one of the following would not develop to anasarca（）
A. Renal edema
B. Cardiac edema
C. Inflammatory edema
D. Hepatic edema
E. Nutritional edema
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