The nurse is administering sublingual nitroglycerin to a client with chest pain. The nurse should place the medication

A. in the cheek.
B. on the tip of the tongue.
C. under the tongue.
D. under the lower lid of the ey

恩格尔系数是指食品支出在家庭总支出的比重。恩格尔系数越高，通常表明

A．生活水平越高

B．生活水平越低

C．食品支出的总量越多

D．食品支出的总量越少