就地数显式压力表显示数据清晰，准确度不应低于（）级，回差应小于0.5%。
A、0.5
B、0.6
C、1.5
D、1.6
参考答案：A
—How long have Mr. and Mrs. Green ______?
—For more than thirty years.[ ]
A. married
B. had married
C. marry
D. been married
有致畸作用，孕妇禁用的药物是（）
A．乙胺嘧啶
B．奎宁
C．伯氨喹
D．青蒿素
E．氯喹
