下列选项中，不属于商业汇票的必须记载事项的是（）。 A.收款人名称 B.出票日期 C

我国国际航行木材船北大西洋冬季载重线按规定表示为（）。

A．LBDD

B．MWNA

C．MBDD

D．LWNA

三个基本的关系运算是 (7) 、 (8) 和联接。

患者男性，35岁，发现右上第二双尖牙腭侧牙龈发白3天，检查见患部有1cm×0.5cm白色角化斑块，表面棘刺状

下列哪项是本病治疗措施之一

A．追踪观察

B．调整免疫

C．给予抗生素

D．心理治疗

E．激素治疗

A well-known former quarterback is probably very adept at analyzing the relative strengths of football teams. However, efforts by television advertisers to suggest that the quarterback is an expert on pantyhose or popcorn poppers should arouse skepticism among viewers. The same response should result when a popular television actor, who is frequently cast in the role of a doctor, appears in a commercial to endorse a brand of decaffeinated coffee. His views on televisior acting would deserve attention since he has had considerable experience in that field, but viewers have every right to doubt his authority in coffee advertisements.
Which one of the following is a presupposition essential to the reasoning in the passage above

A．The strength of authoritative evidence as legitimate proof is closely related to the authority’s degree of expertness in the area in question.

B．Practical experience counts for more than academic training in assessing the competence of authorities.

C．The only kind of evidence being used in many television commercials is appeal to authority.

D．The viewing audience is not sufficiently capable of evaluating authoritative appeals in advertisements.

E．(E) Television viewers will somehow mentally transfer the credibility of celebrities in one area of expertise to another represented by the product being advertised.

我国的发电能源构成中，火电占总发电量比例较大，2006年，我国火电装机的比例为（）%左右，而水电装机占总容量的比例仅为（）%左右。

A、23；75

B、50；50

C、78；21