进行健康教育与健康促进干预时，采用哪种策略效果将会更好（） A.社会策略 B.环境策

––What a journey! We’ve finally arrived!

––_____ an out-of-date train schedule, we would not have missed the train.

A．Had we not used

B．Did we use

C．If we didn’t use

D．If we had used

Microwave communication uses high-frequency (71) waves that travel in straightlines throughthe air. Because the waves cannot (72) with the curvature of the earth, they can be (73) only over short distance. Thus, microwave is a good (74) for sendingdata between buildings ina city or on a large college campus. For longer distances, the wavesmust be relayed by means of"dishes" or (75) . These can be installed on towers, highbuildings, and mountain tops.

A．optical

B．radio

C．electrical

D．magnetic

患者男性，30岁，进食时左侧颌下区肿胀疼痛．进食后数小时逐渐消退。颌下腺导管开口处红肿，轻压腺体导管口溢脓

应与本病作鉴别诊断的疾病不包括

A．化脓性舌下腺炎

B．颌下淋巴结炎

C．颌下间隙感染

D．舌下腺肿瘤

E．颌下腺肿瘤

龙卡通选择不打印密码信封时统一默认密码为（），持卡人须持本人有效身份证件在发卡行指定的营业网点柜台修改密码后才能使用。

A.888888

B.955330

C.666666

D.123456