如图所示，理想变压器的原副线圈匝数比n1：n2=1：10，副线圈与阻值R=20Ω

When Wes Smith first joined Advisors, Inc., he was excited that all the analysts at the firm had the CFA designation. In letters to prospective clients he states that this ensures that Advisors can provide better service than their competitors. With respect to Code of Standards, this is:（）

A. not a violation.

B. a violation because he cannot guarantee better service.

C. a violation for both mentioning the CFA designation and saying the firm can guarantee better service.

在正常状况下，银行会计资本的数量应当不小于经济资本的数量。( )

下列哪项不是大剂量芬太尼引起的并发症（）。

A.术中呼吸抑制

B.术后延迟性呼吸抑制

C.胸壁肌肉强直

D.血压降低

E.情绪激动和噩梦

补充语句，把对Student表和Course表的全部操作权限授予用户U1和U2：
GRANT______
ON TABLE Student，Course
TO U1，U2

骨髓穿刺的禁忌证有（）

A.血友病

B.腰椎骨折

C.多发性骨髓瘤累及骨盆

D.前一次穿刺后局部皮肤感染

E.幼儿